ChemSusChem

Cover image for Vol. 8 Issue 2

Early View (Online Version of Record published before inclusion in an issue)

Editor-in-Chief: Guido Kemeling; Editorial Board Chairs: Matthias Beller, Gabriele Centi, Licheng Sun

Impact Factor: 7.117

ISI Journal Citation Reports © Ranking: 2013: 17/148 (Chemistry Multidisciplinary)

Online ISSN: 1864-564X

Associated Title(s): Angewandte Chemie International Edition, Chemistry - A European Journal, Chemistry – An Asian Journal, ChemCatChem, ChemElectroChem, ChemPhysChem, Energy Technology

VIEW

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  1. Viewpoints

    1. Across the Board: Regina Palkovits

      Prof. Dr. Regina Palkovits

      Article first published online: 30 JAN 2015 | DOI: 10.1002/cssc.201403431

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      Biofuels: Regina Palkovits, a member of ChemSusChem′s International Advisory Board, describes recent significant progress in the production of the cellulosic biofuel 2,5-dimethylfuran. In spite of these advances several challenges remain, such as catalyst stability, an understanding of the associated deactivation mechanisms, and catalyst design for selective transformations in the aqueous phase.

  2. Minireviews

    1. Uncovering Structure–Activity Relationships in Manganese-Oxide-Based Heterogeneous Catalysts for Efficient Water Oxidation

      Dr. Arindam Indra, Dr. Prashanth W. Menezes and Prof. Dr. Matthias Driess

      Article first published online: 30 JAN 2015 | DOI: 10.1002/cssc.201402812

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      A good mimic: Recent progress in the biomimetic manganese-oxide-based catalysts for the water oxidation is reviewed in the light of the structural and functional model of the oxygen-evolving CaMn4O5 center in photosystem II. Chemical, photochemical, and electrochemical processes in artificial photosynthesis are discussed together with new synthetic approaches, experimental modification, and the mechanistic understanding of the half reaction of water splitting.

  3. Highlights

    1. Enabling Catalytic Oxidation of Li2O2 at the Liquid–Solid Interface: The Evolution of an Aprotic Li–O2 Battery

      Ningning Feng, Prof. Dr. Ping He and Prof. Dr. Haoshen Zhou

      Article first published online: 29 JAN 2015 | DOI: 10.1002/cssc.201403338

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      Round-trip fare: In comparison with past heterogeneous oxygen evolution reaction catalysts, the incorporation of a suitable soluble redox mediator helps reduce the charging overpotential and improve the round-trip efficiency of an aprotic Li–O2 battery. This Highlight not only explores another new redox couple, 10-methyl-10H-phenothiazine, as a soluble catalyst, but also proposes possible challenges for future improvements in an aprotic Li–O2 battery.

  4. Full Papers

    1. From Lignocellulosic Biomass to Lactic- and Glycolic-Acid Oligomers: A Gram-Scale Microwave-Assisted Protocol

      Diego Carnaroglio, Silvia Tabasso, Beata Kwasek, Dariusz Bogdal, Emanuela Calcio Gaudino and Giancarlo Cravotto

      Article first published online: 29 JAN 2015 | DOI: 10.1002/cssc.201403183

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      Not drowning but microwaving: A flash catalytic conversion (2 min) of lignocellulosic biomass into lactic and glycolic acids under microwave irradiation is reported. The batch procedure is successfully adapted to a microwave-assisted flow process, with the aim of designing a scalable process with higher productivity. Good yields and conversions are maintained, productivity is increased and energy consumption is low.

    2. Towards High-Energy-Density Pseudocapacitive Flowable Electrodes by the Incorporation of Hydroquinone

      M. Boota, K. B. Hatzell, Prof. E. C. Kumbur and Prof. Y. Gogotsi

      Article first published online: 29 JAN 2015 | DOI: 10.1002/cssc.201402985

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      Solving big problems with small molecules: Small organic redox molecules are anchored on spherical carbon particles by facile, low-cost, eco-friendly, and scalable methods to boost the energy and power density of pseudocapacitive flowable suspension-type electrodes for electrochemical flow capacitors—a new concept for large-scale energy storage.

    3. From Lignocellulosic Biomass to Furans via 5-Acetoxymethylfurfural as an Alternative to 5-Hydroxymethylfurfural

      Eun-Sil Kang, Yeon-Woo Hong, Da Won Chae, Bora Kim, Prof. Dr. Baekjin Kim, Prof. Dr. Yong Jin Kim, Prof. Dr. Jin Ku Cho and Prof. Dr. Young Gyu Kim

      Article first published online: 23 JAN 2015 | DOI: 10.1002/cssc.201403252

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      Alternative routes: A facile pathway to furan derivatives from lignocellulosic biomass via 5-acetoxymethylfurfural (AMF) is reported. AMF possesses advantageous properties to well-known 5-hydroxymethylfurfural (HMF) and can be transformed into various promising furanic compounds in high yields.

  5. Cover Pictures

    1. You have free access to this content
      Controlling Porosity in Lignin-Derived Nanoporous Carbon for Supercapacitor Applications

      Ju-Won Jeon, Libing Zhang, Prof. Jodie L. Lutkenhaus, Dr. Dhrubojyoti D. Laskar, Dr. John P. Lemmon, Dr. Daiwon Choi, Dr. Manjula I. Nandasiri, Ali Hashmi, Prof. Jie Xu, Dr. Radha K. Motkuri, Dr. Carlos A. Fernandez, Dr. Jian Liu, Dr. Melvin P. Tucker, Peter B. McGrail, Prof. Bin Yang and Dr. Satish K. Nune

      Article first published online: 23 JAN 2015 | DOI: 10.1002/cssc.201403346

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      The Front Cover image illustrates various pathways to achieve renewable energy storage. Low-cost renewable lignin has been used as a precursor to produce high-surface, graphitized porous carbons. These carbonized residues exhibit relatively high electrochemical performance in terms of specific capacitance, energy density, and power with good capacity retention. More details can be found in the Full Paper by Jeon et al. on page ▪▪ (DOI: 10.1002/cssc.201402621).

  6. Communications

    1. The Role of Mott–Schottky Heterojunctions in Ag–Ag8SnS6 as Counter Electrodes in Dye-Sensitized Solar Cells

      Qingquan He, Shoushuang Huang, Prof. Cheng Wang, Prof. Qiquan Qiao, Na Liang, Miao Xu, Wenlong Chen, Dr. Jiantao Zai and Prof. Xuefeng Qian

      Article first published online: 23 JAN 2015 | DOI: 10.1002/cssc.201403343

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      Great Schott! Well-defined catalysts of uniform pyramidal Ag–Ag8SnS6 heterodimers with Mott–Schottky heterojunctions are prepared by a one-pot method. The formed heterojunctions promote electron transfer from n-type semiconducting Ag8SnS6 to metallic Ag. The increased electron density of Ag accelerates the reduction of I3 to I in dye-sensitized solar cells, leading to performances comparable to platinum catalysts.

    2. Hollow Mesoporous Carbon Cubes with High Activity towards the Electrocatalytic Reduction of Oxygen

      Dr. Lisong Chen, Xiangzhi Cui, Lingxia Zhang, Yongxia Wang, Min Wang, Dr. Fangming Cui, Chenyang Wei, Jingwei Feng, Tongguang Ge, Wenchao Ren and Prof. Jianlin Shi

      Article first published online: 23 JAN 2015 | DOI: 10.1002/cssc.201403000

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      Burn-in: Hollow-structured mesoporous carbon cubes (HMCCs) are successfully synthesized from carbon dioxide by a method involving thermal reduction of magnesium. During the synthesis, the carbons are doped with pyrrole-type nitrogen species in situ. The samples demonstrate good performance in the electrochemical reduction of oxygen, making them a promising alternative for commercial Pt/C fuel-cell catalysts.

  7. Cover Profiles

    1. Controlling Porosity in Lignin-Derived Nanoporous Carbon for Supercapacitor Applications

      Ju-Won Jeon, Libing Zhang, Prof. Jodie L. Lutkenhaus, Dr. Dhrubojyoti D. Laskar, Dr. John P. Lemmon, Dr. Daiwon Choi, Dr. Manjula I. Nandasiri, Ali Hashmi, Prof. Jie Xu, Dr. Radha K. Motkuri, Dr. Carlos A. Fernandez, Dr. Jian Liu, Dr. Melvin P. Tucker, Peter B. McGrail, Prof. Bin Yang and Dr. Satish K. Nune

      Article first published online: 22 JAN 2015 | DOI: 10.1002/cssc.201403347

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      “This work provides a significant advancement to the development of high surface area carbons with controlled porosity…” This and more about the story behind the research that inspired the cover image can be found on page ▪▪ (10.1002/cssc.201403347). View the Front Cover on page ▪▪ (10.1002/cssc.201403346).

  8. Communications

    1. Photocatalytic Carbon Dioxide Reduction with Rhodium-based Catalysts in Solution and Heterogenized within Metal–Organic Frameworks

      Dr. Matthew B. Chambers, Xia Wang, Noémie Elgrishi, Dr. Christopher H. Hendon, Dr. Aron Walsh, Jonathan Bonnefoy, Dr. Jérôme Canivet, Dr. Elsje Alessandra Quadrelli, Dr. David Farrusseng, Dr. Caroline Mellot-Draznieks and Prof. Marc Fontecave

      Article first published online: 22 JAN 2015 | DOI: 10.1002/cssc.201403345

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      The rhod ahead: The first photosensitization of a rhodium-based catalytic system for CO2 reduction is reported, with formate as the sole carbon-containing product. Heterogenization of molecular catalysts is accomplished via the synthesis and characterization of a new metal-organic framework (MOF) Cp*Rh@UiO-67. With comparable catalytic activities, the MOF-based system is more stable and selective. Furthermore it can be recycled without loss of activity.

  9. Full Papers

    1. Double-Chamber Microbial Fuel Cell with a Non-Platinum-Group Metal Fe–N–C Cathode Catalyst

      Dr. Carlo Santoro, Dr. Alexey Serov, Dr. Claudia W. Narvaez Villarrubia, Sarah Stariha, Dr. Sofia Babanova, Dr. Andrew J. Schuler, Dr. Kateryna Artyushkova and Dr. Plamen Atanassov

      Article first published online: 21 JAN 2015 | DOI: 10.1002/cssc.201402570

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      Non-platinum-group cathodes for microbial fuel cells: The electroactivity of non-Pt-group metals (non-PGM) compared to Pt used as catalyst in double-chamber microbial fuel cells is studied. The pH value of the electrolyte influences dramatically the activity. Pt performance is reduced as the pH value increases, whereas the non-PGM catalysts achieve their best performance in alkaline conditions, bettering Pt performance. The cost–performance analysis underlines the cost reduction per Watt produced compared to Pt.

    2. The Accessible Cellulose Surface Influences Cellulase Synergism during the Hydrolysis of Lignocellulosic Substrates

      Dr. Jinguang Hu, Dr. Keith Gourlay, Dr. Valdeir Arantes, Dr. J. S. Van Dyk, Dr. Amadeus Pribowo and Dr. Jack N. Saddler

      Article first published online: 21 JAN 2015 | DOI: 10.1002/cssc.201403335

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      Act in sync: To reduce enzyme/protein loading it is important to understand how different cellulases act cooperatively together. Although the processive cellulase, Cel7A, was the major contributor to overall cellulose hydrolysis, hydrolytic performance was increased by the other cellulases enhancing Cel7A release from the substrate. The amount and nature of the accessible cellulose had a major influence on the effectiveness of enzyme synergism.

  10. Communications

    1. Tin-containing Silicates: Alkali Salts Improve Methyl Lactate Yield from Sugars

      Søren Tolborg, Dr. Irantzu Sádaba, Dr. Christian M. Osmundsen, Dr. Peter Fristrup, Dr. Martin S. Holm and Dr. Esben Taarning

      Article first published online: 21 JAN 2015 | DOI: 10.1002/cssc.201403057

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      A pretty­ basic­ solution: The presence of alkali metal ions (either in the catalyst or in the medium) in the Sn-Beta zeolite-catalyzed synthesis of methyl lactate from sugars increases the yields, from 30 % to 75 %. The alkali effect is found to apply to Sn-Beta prepared by post-treatment of a dealuminated commercial zeolite as well as for ordered mesoporous Sn-MCM-41 and Sn-SBA-15. The optimization of the catalyst synthesis and reaction conditions leads to increased selectivity to lactic acid derivatives from sugars.

  11. Full Papers

    1. Enhancing Catalytic Activity by Narrowing Local Energy Gaps—X-Ray Studies of a Manganese Water Oxidation Catalyst

      Dr. Jie Xiao, Munirah Khan, Archana Singh, Dr. Edlira Suljoti, Prof. Dr. Leone Spiccia and Prof. Dr. Emad F. Aziz

      Article first published online: 21 JAN 2015 | DOI: 10.1002/cssc.201403219

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      Electrifying catalysis! The catalytic activity of MnOx catalysts doped in Nafion film derived from a dinuclear MnIII complex during water oxidation is significantly enhanced when two external stimulations are applied simultaneously rather than separately. The origin of this catalytic enhancement is investigated by resonant inelastic X-ray scattering analyses, indicating a significant narrowing of the local energy gap.

  12. Cover Pictures

    1. You have free access to this content
      CO2 Hydrogenation to Methanol on Supported Au Catalysts under Moderate Reaction Conditions: Support and Particle Size Effects

      Yeusy Hartadi, Dr. Daniel Widmann and Prof. Dr. R. Juergen Behm

      Article first published online: 21 JAN 2015 | DOI: 10.1002/cssc.201403357

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      The Inside Back Cover, which was hand-drawn by a theoretical chemist who is also an art enthusiast, illustrates the pathway of the synthesis of green methanol (MeOH) on Au nanoparticles supported on ZnO. The green MeOH is produced using H2 generated by the electrolysis of water using excess electrical energy from renewable sources and CO2 obtained by CO2 capture and sequestration. This concept enables the storage of electrical energy in the form of chemical energy as well as the utilization of CO2 leading to the reduction of overall CO2 emissions, both of which are major challenges today. More details are available in the Communication by Behm et al. on page ▪▪ (DOI: 10.1002/cssc.201402645).

  13. Communications

    1. Iron-Catalyzed Hydrogenation of Bicarbonates and Carbon Dioxide to Formates

      Fengxiang Zhu, Ling Zhu-Ge, Prof. Dr. Guangfu Yang and Prof. Dr. Shaolin Zhou

      Article first published online: 21 JAN 2015 | DOI: 10.1002/cssc.201403234

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      Carbon dioxide is an attractive C1 source because it is easily and abundantly available, relatively nontoxic, and renewable. An effective, phosphine-free, air- and moisture-tolerant catalyst system based on Knölker’s iron complex for the hydrogenation of bicarbonate and carbon dioxide to formate is described. The catalyst system hydrogenates bicarbonate at remarkably low hydrogen pressures.

    2. Unexpected Tackifiers from Isosorbide

      Michael D. Zenner, Prof. Dr. Samy A. Madbouly, Prof. Dr. Jason S. Chen and Prof. Dr. Michael R. Kessler

      Article first published online: 19 JAN 2015 | DOI: 10.1002/cssc.201402667

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      Delightfully tacky, yet refined: Tackifiers are compounds that impart instantaneous tack and are important as components of pressure-sensitive adhesives and as oil modifiers. The tackifiers synthesized herein in a single solvent-free step in quantitative yield have up to 100 % bio-content. Structural modifications change the temperature at which the maximum tack is observed and the viscosity at that same temperature.

  14. Full Papers

    1. Titania-Supported Catalysts for Levulinic Acid Hydrogenation: Influence of Support and its Impact on γ-Valerolactone Yield

      Dr. A. M. Ruppert, Dr. J. Grams, Dr. M. Jędrzejczyk , J. Matras-Michalska, Dr. N. Keller, K. Ostojska and Dr. P. Sautet

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cssc.201403332

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      What lies beneath: A number of different titanias are implemented as supports for Ru and Pt catalysts. It is shown that various morphologies and phases of titania influence the physicochemical properties of the studied catalysts in different ways. The best catalytic performance in levulinic acid hydrogenation is achieved in the case of mixed rutile/anatase-supported ruthenium catalyst.

    2. Very Important Paper

      How a [CoIVequation imageO]2+ Fragment Oxidizes Water: Involvement of a Biradicaloid [CoII–(⋅O⋅)]2+ Species in Forming the O[BOND]O Bond

      Douglas W. Crandell, Soumya Ghosh, Curtis P. Berlinguette and Mu-Hyun Baik

      Article first published online: 14 JAN 2015 | DOI: 10.1002/cssc.201403024

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      Quantum leap: Quantum chemical models based on density functional theory are used to study the mechanism of water oxidation performed by a recently discovered cobalt complex (Py5=2,6-(bis(bis-2-pyridyl)-methoxymethane)pyridine). It was shown that the most catalytically active species is the intermediate-spin quartet complex that is almost isoenergetic with the doublet state.

    3. Silane Meets Click Chemistry: Towards the Functionalization of Wet Bacterial Cellulose Sheets

      Hubert Hettegger, Dr. Ivan Sumerskii, Prof. Salvatore Sortino, Prof. Antje Potthast and Prof. Dr. Thomas Rosenau

      Article first published online: 13 JAN 2015 | DOI: 10.1002/cssc.201402991

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      Right click: Wet bacterial cellulose gels are functionalized for subsequent modification by CuI-catalyzed click chemistry. Bacterial cellulose aquogels are premodified under mild and environmentally friendly conditions by the hydrolysis of an alkoxysilane compound that comprises a terminal azide functionality followed by the covalent grafting of the silanols during rapid thermal treatment.

    4. Selective Aerobic Oxidation of HMF to 2,5-Diformylfuran on Covalent Triazine Frameworks-Supported Ru Catalysts

      Jens Artz, Sabrina Mallmann and Prof. Dr. Regina Palkovits

      Article first published online: 13 JAN 2015 | DOI: 10.1002/cssc.201403078

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      Oxidize and conquer: 5-Hydroxymethylfurfural (HMF) has been oxidized selectively to 2,5-diformylfuran (DFF) using air under mild conditions with Ru supported on covalent triazine frameworks (CTFs) as catalysts. These catalysts result in higher conversions and yields compared to commercially available Ru/C and show superior stability in recycling studies.

    5. Direct C[BOND]H Arene Homocoupling over Gold Nanoparticles Supported on Metal Oxides

      Dr. Tamao Ishida, Shohei Aikawa, Yoshiyuki Mise, Ryota Akebi, Dr. Akiyuki Hamasaki, Dr. Tetsuo Honma, Dr. Hironori Ohashi, Dr. Tetsuro Tsuji, Yasushi Yamamoto, Dr. Mitsuru Miyasaka, Prof. Dr. Takushi Yokoyama and Prof. Dr. Makoto Tokunaga

      Article first published online: 12 JAN 2015 | DOI: 10.1002/cssc.201402822

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      Supporting role: Cooperative catalysis by gold nanoparticles and metal oxide supports enables the direct C[BOND]H/C[BOND]H coupling of dimethyl phthalate to give a symmetrical biaryl with excellent regioselectivity. Gold nanoparticles act both as catalytically active species and as bulky ligands, which enables the selective synthesis of symmetrical biaryls. Metal oxides assist the reductive elimination by their redox properties.

    6. Very Important Paper

      You have free access to this content
      A Highly Resilient Mesoporous SiOx Lithium Storage Material Engineered by Oil–Water Templating

      Eunjun Park, Dr. Min-Sik Park, Jaewoo Lee, Dr. Ki Jae Kim, Dr. Goojin Jeong, Prof. Jung Ho Kim, Dr. Young-Jun Kim and Prof. Hansu Kim

      Article first published online: 9 JAN 2015 | DOI: 10.1002/cssc.201402907

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      All′s well with oil: Carbon-coated porous SiOx is synthesized by a facile and scalable approach, that is, a sol–gel reaction of hydrogen silsesquioxane together using oil–water templating. A hydrophobic oil is used as both, a pore former inside the SiOx matrix and a precursor for carbon encapsulation on the surface of SiOx. The resulting anode material exhibits a high reversible capacity and outstanding cycling performance over 100 cycles without significant dimensional changes.

    7. Carbon Dioxide Splitting in a Dielectric Barrier Discharge Plasma: A Combined Experimental and Computational Study

      Dr. Robby Aerts, Wesley Somers and Prof. Dr. Annemie Bogaerts

      Article first published online: 9 JAN 2015 | DOI: 10.1002/cssc.201402818

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      Split it: Plasma technology is gaining increasing interest for the splitting of CO2 into CO and O2. However, only some scattered results on pure CO2 splitting have been reported. We present an in-depth study of the conversion and energy efficiency of CO2 splitting by using a dielectric barrier discharge plasma in a wide range of applied frequencies, electric powers, and gas flow rates and by combining experimental and computational results.

    8. Mechanism of Brønsted Acid-Catalyzed Glucose Dehydration

      Dr. Liu Yang, Dr. George Tsilomelekis, Dr. Stavros Caratzoulas and Dr. Dionisios G. Vlachos

      Article first published online: 8 JAN 2015 | DOI: 10.1002/cssc.201403264

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      Glucose dehydration: The DFT-based microkinetic modeling of the Brønsted acid-catalyzed dehydration of glucose is in excellent agreement with experimental kinetic data. The rate-limiting step is the first dehydration of protonated glucose. Isotopic tracing NMR spectroscopy reveals that glucose dehydrates through a cyclic path and the majority of glucose is consumed by the 5-hydroxymethylfurfural intermediate at low conversions.

    9. Enhancing the Performance of a Robust Sol–Gel-Processed p-Type Delafossite CuFeO2 Photocathode for Solar Water Reduction

      Mathieu S. Prévot, Dr. Néstor Guijarro and Prof. Kevin Sivula

      Article first published online: 8 JAN 2015 | DOI: 10.1002/cssc.201403146

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      Make the cut: Inexpensive and facile processing aid optimization and allow for insights into the limitations of delafossite CuFeO2, which is a promising material for photoelectrochemical energy conversion. A sol–gel-based technique to prepare thin films of p-type delafossite CuFeO2 on fluorine-doped tin oxide (FTO) glass is described.

    10. You have full text access to this OnlineOpen article
      Chemo- and Diastereoselectivities in the Electrochemical Reduction of Maleimides

      Dr. Kathryn Rix, Prof. Geoffrey H. Kelsall, Prof. Klaus Hellgardt and Dr. King Kuok (Mimi) Hii

      Article first published online: 8 JAN 2015 | DOI: 10.1002/cssc.201403184

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      Reduce with precision: The efficiency and selectivity of the electrochemical reduction of maleimide derivatives are examined in a continuous-flow reactor. The stereoselectivity of the process can be rationalized by using DFT calculations.

    11. You have free access to this content
      Catalytic Partial Oxidation Coupled with Membrane Purification to Improve Resource and Energy Efficiency in Syngas Production

      G. Iaquaniello, A. Salladini, E. Palo and G. Centi

      Article first published online: 8 JAN 2015 | DOI: 10.1002/cssc.201402732

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      Original syn: Experimentation in a semi-industrial scale unit (20 Nm3 h−1 production) shows that a syngas production scheme based on a pre-reforming stage followed by a membrane for hydrogen separation, a catalytic partial oxidation step, and a further step of syngas purification by membrane allows the oxygen-to-carbon ratio to be decreased while maintaining levels of feed conversion, realizing a more sustainable and economic process for syngas production.

    12. Precious-Metal-Free Co–Fe–O/rGO Synergetic Electrocatalysts for Oxygen Evolution Reaction by a Facile Hydrothermal Route

      Jing Geng, Long Kuai, Erjie Kan, Qing Wang and Prof. Dr. Baoyou Geng

      Article first published online: 8 JAN 2015 | DOI: 10.1002/cssc.201403222

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      No bling here! Precious-metal-free Co–Fe–O composites/rGO hybrid structures were obtained by a facile hydrothermal route. They exhibited apparent composition-dependent activity for the electrochemical oxygen evolution reaction. It is found that synergetic effects contribute a significant decrease of overpotential and Tafel slope for composite catalysts.

  15. Communications

    1. Plasmon-Enhanced Photoelectrochemical Water Splitting Using Au Nanoparticles Decorated on Hematite Nanoflake Arrays

      Dr. Lei Wang, Xuemei Zhou, Nhat Truong Nguyen and Prof. Dr. Patrik Schmuki

      Article first published online: 7 JAN 2015 | DOI: 10.1002/cssc.201403013

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      It′s not only gold that sparkles: We form 1D hematite nanoflake arrays that are decorated with plasmonic Au nanoparticles through a simple solution chemistry approach. We find a significant improvement of the solar water splitting performance due to increased light absorption. This can be attributed to the Au nanoparticles that act as plasmonic photosensitizers.

  16. Full Papers

    1. Fe3W3C/WC/Graphitic Carbon Ternary Nanojunction Hybrids for Dye-Sensitized Solar Cells

      Dr. Yongping Liao, Prof. Ying Xie, Prof. Kai Pan, Prof. Guofeng Wang, Prof. Qingjiang Pan, Prof. Wei Zhou, Prof. Lei Wang, Prof. Baojiang Jiang and Prof. Honggang Fu

      Article first published online: 7 JAN 2015 | DOI: 10.1002/cssc.201402654

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      Easing photoelectron traffic! Because the addition of Fe3W3C with more catalytic metallic atoms provides more catalytic active sites, and the formation of ternary nanojunction provides fast photoelectron transfer, dye-sensitized solar cells based on Fe3W3C/WC/graphitic carbon ternary nanojunction hybrids yield photoelectrical conversion efficiencies that are comparable to those of Pt-based DSSCs.

    2. Modeling, Simulation, and Fabrication of a Fully Integrated, Acid-stable, Scalable Solar-Driven Water-Splitting System

      Karl Walczak, Yikai Chen, Christoph Karp, Jeffrey W. Beeman, Matthew Shaner, Joshua Spurgeon, Ian D. Sharp, Xenia Amashukeli, William West, Jian Jin, Nathan S. Lewis and Chengxiang Xiang

      Article first published online: 7 JAN 2015 | DOI: 10.1002/cssc.201402896

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      A solar-hydrogen prototype: A fully integrated, acid-stable and scalable solar-driven water-splitting system is simulated, assembled and evaluated for performance and safety characteristics. The louvered architecture provides a robust platform for implementation of various types of photoelectrochemical assemblies, and can provide an approach to significantly higher solar conversion efficiencies as new and improved materials become available.

  17. Viewpoints

    1. Across the Board: Hiroshi Imahori

      Prof. Dr. Hiroshi Imahori

      Article first published online: 7 JAN 2015 | DOI: 10.1002/cssc.201403326

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      Solar fuels: There are severe obstacles toward the realization of solar fuels: i) water oxidation requires potentials >1.2 V (vs. normal hydrogen electrode); ii) highly reactive water-derived species on metals should survive to evolve oxygen on the time scale of 10−2 s. This Viewpoint highlights recent progress in photocatalytic four-electron water oxidation by molecular photosensitizer and binuclear catalyst on semiconducting electrodes.

  18. Full Papers

    1. Using Cavity Microelectrodes for Electrochemical Noise Studies of Oxygen-Evolving Catalysts

      Dr. Rosalba A. Rincón, Dr. Alberto Battistel, Dr. Edgar Ventosa, Dr. Xingxing Chen, Dr. Michaela Nebel and Prof. Dr. Wolfgang Schuhmann

      Article first published online: 29 DEC 2014 | DOI: 10.1002/cssc.201402855

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      What’s in the hole? Cavity microelectrodes filled with oxygen evolution reaction electrocatalysts are used for electrochemical noise and conductance measurements with simultaneous video monitoring. The current and conductance transients of the gas-evolving reaction are in phase, which indicates that ohmic overpotentials dominate.

  19. Communications

    1. You have full text access to this OnlineOpen article
      A Visible-Light Harvesting System for CO2 Reduction Using a RuII–ReI Photocatalyst Adsorbed in Mesoporous Organosilica

      Yutaro Ueda, Dr. Hiroyuki Takeda, Prof. Tatsuto Yui, Dr. Kazuhide Koike, Dr. Yasutomo Goto, Dr. Shinji Inagaki and Prof. Osamu Ishitani

      Article first published online: 18 DEC 2014 | DOI: 10.1002/cssc.201403194

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      Light my CO2: A photocatalytic system for CO2 reduction exhibiting visible-light harvesting is developed by preparing a hybrid consisting of a RuII[BOND]ReI complex as photocatalyst and a periodic mesoporous organosilica as light harvester. The light-harvesting ability of the hybrid enhances the photocatalytic activity for CO evolution by a factor of up to ten.

  20. Full Papers

    1. Pressure-Accelerated Azide–Alkyne Cycloaddition: Micro Capillary versus Autoclave Reactor Performance

      Svetlana Borukhova, Dr. Andreas D. Seeger, Dr. Timothy Noël, Qi Wang, Prof. Dr. Markus Busch and Prof. Dr. Volker Hessel

      Article first published online: 17 DEC 2014 | DOI: 10.1002/cssc.201403034

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      Press to access! The potential of pressure in chemical intensification of intrinsic kinetics of 1,3-dipolar cycloaddition is investigated along with high temperature and concentration effects. Two reactors are compared, a specialized autoclave batch reactor for high-pressure operation up to 1800 bar and a capillary flow reactor for up to 400 bar. Reaction speedup and increases in space-time yields are reached while widening process windows of favorable operation to selectively produce Rufinamide precursor in good yields.

    2. Selective Oxidation of n-Butanol Using Gold-Palladium Supported Nanoparticles Under Base-Free Conditions

      Dr. Inaki Gandarias, Dr. Peter J. Miedziak, Dr. Ewa Nowicka, Mark Douthwaite, Dr. David J. Morgan, Prof. Graham J. Hutchings and Prof. Stuart H. Taylor

      Article first published online: 17 DEC 2014 | DOI: 10.1002/cssc.201403190

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      Stabilize, catalyze, oxidize: Au-Pd nanoparticles supported on TiO2, prepared by sol immobilization using polyvinyl alcohol as the stabilizing ligand, produced a high yield of butyric acid by the base-free oxidation of n-butanol by molecular oxygen under mild conditions.

    3. An Aqueous Zinc-Ion Battery Based on Copper Hexacyanoferrate

      Dr. Rafael Trócoli and Dr. Fabio La Mantia

      Article first published online: 15 DEC 2014 | DOI: 10.1002/cssc.201403143

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      1.7 V aqueous battery: A new zinc-ion battery based on copper hexacyanoferrate and zinc foil in a nontoxic, noncorrosive electrolyte has been developed. The system shows cyclability, rate capability, and specific energy values near to those of lithium-ion organic batteries based on Li4Ti5O12 and LiFePO4 at 10 C.

    4. Bifunctional Silver(I) Complex-Catalyzed CO2 Conversion at Ambient Conditions: Synthesis of α-Methylene Cyclic Carbonates and Derivatives

      Dr. Qing-Wen Song, Wei-Qiang Chen, Dr. Ran Ma, Prof. Ao Yu, Qiu-Yue Li, Yao Chang and Prof. Dr. Liang-Nian He

      Article first published online: 15 DEC 2014 | DOI: 10.1002/cssc.201402921

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      Catalytic fixation of CO2: [(PPh3)2Ag]2CO3 is proven to be a robust bifunctional catalyst for the chemical upgrading of CO2 at atmospheric pressure to produce valuable compounds at ambient conditions. [(PPh3)2Ag]2CO3 can activate both CO2 and propargylic alcohol, and promote the subsequent intramolecular nucleophilic cyclization.

  21. Communications

    1. Cyclic Stability Testing of Aminated-Silica Solid Sorbent for Post-Combustion CO2 Capture

      James C. Fisher II and McMahan Gray

      Article first published online: 15 DEC 2014 | DOI: 10.1002/cssc.201402423

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      Best flu treatment: An amine-based sorbent is examined for use in CO2 removal from flue gas streams in coal-fired power plants. Cyclic testing results show the stability of the amine-based sorbents over 100 cycles. Furthermore, a rapid method for measuring capture capacity using a tracer gas is developed and confirmed through quantification of the CO2 released during regeneration.

  22. Full Papers

    1. Selective Hydrogenation of Lactic Acid to 1,2-Propanediol over Highly Active Ruthenium–Molybdenum Oxide Catalysts

      Yasuyuki Takeda, Tomohiro Shoji, Dr. Hideo Watanabe, Dr. Masazumi Tamura, Dr. Yoshinao Nakagawa, Prof. Kazu Okumura and Prof. Keiichi Tomishige

      Article first published online: 15 DEC 2014 | DOI: 10.1002/cssc.201403011

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      Minor adjustment for major effects: Modification of supported ruthenium catalysts with a small amount of molybdenum oxide (Ru[BOND]MoOx/C, Ru[BOND]MoOx/SiO2) enhances the catalytic activity for the hydrogenation of L-lactic acid to give (S)-1,2-propanediol with high selectivity. The turnover frequency is roughly four times higher than over Ru/C. The results reported are encouraging for the design of selective hydrogenation catalysts and the development of synthesis methods of alcohols.

  23. Communications

    1. Methyl N-Phenyl Carbamate Synthesis from Aniline and Methyl Formate: Carbon Recycling to Chemical Products

      Dr. Mohammad S. Yalfani, Dr. Giulio Lolli, Dr. Thomas E. Müller, Dr. Aurel Wolf and Prof. Dr. Leslaw Mleczko

      Article first published online: 12 DEC 2014 | DOI: 10.1002/cssc.201402827

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      Polyurethane precursor: Methyl N-phenyl carbamate was synthesized from aniline by using methyl formate as a green and efficient carbonylating agent. Compared to the conventional CO/CH3OH route, high yields were obtained with milder reaction conditions. Studies on the reaction sequence suggest an alternative and more efficient route to the carbamate via formanilide as intermediate.

  24. Full Papers

    1. Synergistic Effect between Defect Sites and Functional Groups on the Hydrolysis of Cellulose over Activated Carbon

      Guo Shiou Foo and Prof. Carsten Sievers

      Article first published online: 12 DEC 2014 | DOI: 10.1002/cssc.201402928

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      Understanding the hydrolysis of cellulose: Activated carbon is treated chemically with hydrogen peroxide and sulfuric acid to understand the effects of functional groups and morphology on the hydrolysis of cellulose. Defect sites on the carbon surface have been identified as a particularly active environment. Through a synergistic effect with functional groups, glucan chains are hydrolyzed with an increased activity.

  25. Communications

    1. Singlet-Oxygen Oxidation of 5-Hydroxymethylfurfural in Continuous Flow

      Dr. Thomas S. A. Heugebaert, Prof. Dr. Christian V. Stevens and Prof. Dr.  C. Oliver Kappe

      Article first published online: 11 DEC 2014 | DOI: 10.1002/cssc.201403182

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      Rosy future: The selective, high yielding, singlet-oxygen-mediated oxidation of 5-hydroxymethylfurfural (5-HMF) is performed in continuous-flow mode using rose Bengal as photosensitizer. The resulting butenolide (H2MF) is shown to be a valuable bio-based polyester precursor and the procedure proved to be scalable and applicable to related bio-based furfurals.

  26. Full Papers

    1. Direct Alcohol Fuel Cells: Toward the Power Densities of Hydrogen-Fed Proton Exchange Membrane Fuel Cells

      Dr. Yanxin Chen, Marco Bellini, Dr. Manuela Bevilacqua, Dr. Paolo Fornasiero, Dr. Alessandro Lavacchi, Dr. Hamish A. Miller, Lianqin Wang and Dr. Francesco Vizza

      Article first published online: 11 DEC 2014 | DOI: 10.1002/cssc.201402999

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      Owed to an anode: The use of biomass-derived alcohols in direct fuel cells is an attractive way to transform their chemical energy into electrical power. To avoid the drawbacks of carbon-supported nanoparticle (NP) electrocatalysts, anodes consisting of Pd NPs supported on 3 D TiO2 nanotube arrays have been prepared. Fuel cells with these anodes produce power densities in direct fuel cells fed with bioalcohols that approach the level of H2-fed proton exchange membrane fuel cells.

    2. Effect of Component Distribution and Nanoporosity in CuPt Nanotubes on Electrocatalysis of the Oxygen Reduction Reaction

      Dr. Huizhang Guo, Xiang Liu, Dr. Chengdong Bai, Dr. Yuanzhi Chen, Dr. Laisen Wang, Prof. Mingsen Zheng, Prof. Quanfeng Dong and Prof. Dong-Liang Peng

      Article first published online: 11 DEC 2014 | DOI: 10.1002/cssc.201403037

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      Poring over the results: CuPt nanotubes and porous Cu3Pt intermetallic nanorods are prepared through a controlled galvanic replacement reaction and heat treatment process. The relationship among the geometric features, component distribution, and oxygen reduction reaction performance in these electrocatalysts are clarified.

    3. Catalytic Hydrodechlorination of Benzyl Chloride Promoted by Rh–N-heterocyclic Carbene Catalysts

      Guillermo Lázaro, Dr. Víctor Polo, Dr. Francisco J. Fernández-Alvarez, Dr. Pilar García-Orduña, Prof. Fernando J. Lahoz, Dr. Manuel Iglesias, Prof. Jesús J. Pérez-Torrente and Prof. Luis A. Oro

      Article first published online: 10 DEC 2014 | DOI: 10.1002/cssc.201403036

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      What a clamp: The effective solvent-free hydrodechlorination of benzyl chloride using silanes as hydrogen source in the presence of homogeneous and heterogeneous Rh–N-heterocyclic carbene-based catalysts supported on MCM-41 is reported. The catalysts have been investigated thoroughly using several techniques. A reaction pathway is proposed based on DFT data and experimental insights.

    4. Decoupling HZSM-5 Catalyst Activity from Deactivation during Upgrading of Pyrolysis Oil Vapors

      Dr. Shaolong Wan, Christopher Waters, Adam Stevens, Abhishek Gumidyala, Prof. Rolf Jentoft, Prof. Lance Lobban, Prof. Daniel Resasco, Prof. Richard Mallinson and Prof. Steven Crossley

      Article first published online: 10 DEC 2014 | DOI: 10.1002/cssc.201402861

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      Divide and conquer: We demonstrate the use of a second catalytic reactor to study the role of zeolite catalyst temperature and the density of acid sites on catalytic activity and stability independently upon contact with pulses of biomass pyrolysis vapors.

  27. Concepts

    1. Electrifying White Biotechnology: Engineering and Economic Potential of Electricity-Driven Bio-Production

      Dr. Falk Harnisch, Dr. Luis F. M. Rosa, Frauke Kracke, Dr. Bernardino Virdis and Dr. Jens O. Krömer

      Article first published online: 10 DEC 2014 | DOI: 10.1002/cssc.201402736

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      En route to electricity-driven bio-production: Microbial electrochemical technology is an interdisciplinary field that is devoted to the development of applications based on processes interfacing microbiology and electrochemistry. One of the most promising fields is the electricity-driven biosynthesis. We show that there is a significant market potential if technical obstacles can be overcome.

  28. Minireviews

    1. Rhenium-Catalyzed Deoxydehydration of Diols and Polyols

      Dr. Johannes R. Dethlefsen and Dr. Peter Fristrup

      Article first published online: 4 DEC 2014 | DOI: 10.1002/cssc.201402987

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      Taking a shortcut! Recent developments in the rhenium-catalyzed deoxydehydration reaction are reviewed. Although the reaction is formally a deoxygenation and a dehydration, the use of transition metal catalysis opens up new possibilities. The focus is on recent developments of the substrate scope, alternative reductants, and mechanistic investigations.

  29. Communications

    1. Functionalized Fe3O4@Silica Core–Shell Nanoparticles as Microalgae Harvester and Catalyst for Biodiesel Production

      Ya-Dong Chiang, Dr. Saikat Dutta, Ching-Tien Chen, Prof. Dr. Yu-Tzu Huang, Prof. Dr. Kuen-Song Lin, Prof. Dr. Jeffrey C. S. Wu, Dr. Norihiro Suzuki, Prof. Dr. Yusuke Yamauchi and Prof. Dr. Kevin C.-W. Wu

      Article first published online: 4 DEC 2014 | DOI: 10.1002/cssc.201402996

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      Harvesting and fuelling: Core–shell Fe3O4@silica magnetic nanoparticles functionalized with a strong base, triazabicyclodecene (TBD), were successfully synthesized for harvesting microalgae and for one-pot microalgae-to-fatty acid methyl ester (FAME, or so-called biodiesel) conversion. Covalently functionalized core–shell nanoparticles have a large potential for the production of liquid transportation fuels from algal biomass.

    2. Metal-Catalyst-Free Carbohydrazide Fuel Cells with Three-Dimensional Graphene Anodes

      Ji Qi, Neeva Benipal, Dr. Hui Wang, David J. Chadderdon, Yibo Jiang, Wei Wei, Prof. Yun Hang Hu and Prof. Wenzhen Li

      Article first published online: 3 DEC 2014 | DOI: 10.1002/cssc.201403032

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      We had met before: The commercialization of fuel cells is hindered by the limited reserves of metals. Metal-catalyst-free fuel cells powered by the carbohydrazide oxidation reaction over 3D graphene as anode catalyst and nitrogen-doped carbon nanotubes as cathode are demonstrated. The average number of electrons electrochemically extracted from a single carbohydrazide molecule indicates activation of carbon–nitrogen bonds, a key factor contributing to high fuel utilization efficiency.

    3. Cross-Metathesis of Biosourced Fatty Acid Derivatives: A Step Further Toward Improved Reactivity

      Dr. Paul Vignon, Tom Vancompernolle, Dr. Jean-Luc Couturier, Dr. Jean-Luc Dubois, Prof. André Mortreux and Dr. Régis M. Gauvin

      Article first published online: 3 DEC 2014 | DOI: 10.1002/cssc.201403170

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      Howdy, partner! The use of internal functionalized olefins as partners in the cross-metathesis of biosourced fatty acid methyl esters affords a monomer for polyester synthesis with high efficiency, despite low catalytic loading and minimal substrate purification.

  30. Full Papers

    1. Vectorial Electron Transfer for Improved Hydrogen Evolution by Mercaptopropionic-Acid-Regulated CdSe Quantum-Dots–TiO2–Ni(OH)2 Assembly

      Dr. Shan Yu, Dr. Zhi-Jun Li, Xiang-Bing Fan, Jia-Xin Li, Fei Zhan, Xu-Bing Li, Prof. Ye Tao, Prof. Chen-Ho Tung and Prof. Li-Zhu Wu

      Article first published online: 3 DEC 2014 | DOI: 10.1002/cssc.201402885

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      Dotty about hydrogen: If mercaptopropionic acid is used as the linker, a turnover frequency of 5140 h−1 based on CdSe quantum dots (QDs) for photocatalytic hydrogen evolution is achieved by a CdSe QDs–TiO2–Ni(OH)2 ternary assembly at pH 11. Vectorial electron transfer from CdSe QDs to TiO2 and then to Ni(OH)2 is crucial for this high efficiency.

  31. Viewpoints

    1. Across the Board: Jairton Dupont

      Prof. Dr. Jairton Dupont 

      Article first published online: 2 DEC 2014 | DOI: 10.1002/cssc.201403276

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      CO2 activation: Our board member Jairton Dupont highlights how the fine-tuning of the electronic and steric properties of ruthenium and rhodium complexes and reaction conditions generates efficient homogeneous transition-metal catalysts for the transformation of CO2 under hydrogen pressure. The catalysts find use in the methylation of amines, amides, and C[BOND]H bonds as well as for the hydroformylation, alkoxycarbonylation, and hydrocarboxylation of alkenes.

  32. Full Papers

    1. Synthesis of Lithium Iron Phosphate/Carbon Microspheres by Using Polyacrylic Acid Coated Iron Phosphate Nanoparticles Derived from Iron(III) Acrylate

      Dongwei Xu, Prof. Yan-Bing He, Xiaodong Chu, Dr. Zhaojun Ding, Prof. Baohua Li, Jianfu He, Prof. Hongda Du, Xianying Qin and Prof. Feiyu Kang

      Article first published online: 2 DEC 2014 | DOI: 10.1002/cssc.201403060

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      Under cover: Lithium iron phosphate/carbon (LiFePO4/C) microspheres with high rate and cycling performances are synthesized from nanoparticles. A complete carbon coating on the surface of the primary nanoparticles, derived from carbonation of the in situ polymerized PAA layer, controls the grain growth effectively and greatly enhances the electronic and ionic conductivities of the LiFePO4/C electrode.

    2. Alkaline Stability of Quaternary Ammonium Cations for Alkaline Fuel Cell Membranes and Ionic Liquids

      M. G. Marino and Dr. K. D. Kreuer

      Article first published online: 27 NOV 2014 | DOI: 10.1002/cssc.201403022

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      Twice thwarted: The hydroxide-induced decomposition of 26 different quaternary ammonium (QA) groups reveals a piperidine-based heterocycle and its spiro compound as the most stable QAs. Their ring structure makes them highly resistant against both elimination and substitution reaction This is counterintuitive in view of the common assumption that avoidance of β-protons is essential for reducing degradation rates. This is fundamentally intriguing as well as relevant for the development of OH exchange membranes and ionic liquids.

    3. Plasticizer and Surfactant Formation from Food-Waste- and Algal Biomass-Derived Lipids

      Dr. Daniel Pleissner, Kin Yan Lau, Prof. Chengwu Zhang and Dr. Carol Sze Ki Lin

      Article first published online: 25 NOV 2014 | DOI: 10.1002/cssc.201402888

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      Establishment of a green society by waste utilization: A sustainable process is introduced for the formation of plasticizers and surfactants from food-waste and algal lipids. Plasticizer was formed by epoxidation of unsaturated fatty acids extracted from food-waste and algal biomass, heterotrophically produced from food-waste hydrolysate. Surfactant was produced by transesterification of epoxidized and saturated fatty acid methyl esters with polyglycerol for the formation of surfactants.

  33. Communications

    1. Effects of Catalyst Pore Structure and Acid Properties on the Dehydration of Glycerol

      Youngbo Choi, Hongseok Park, Yang Sik Yun and Prof. Dr. Jongheop Yi

      Article first published online: 21 NOV 2014 | DOI: 10.1002/cssc.201402925

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      Combined action: Hierarchically mesoporous acidic nanocatalysts with different acidic properties are used for the dehydration of glycerol. A comparison of the nanocatalysts with microporous and mesoporous acid-catalysts verifies the benefits of hierarchical pores on enhancing the apparent activity and stability of the catalyst, but also highlights that overall catalytic performance is determined by the combined action of porous and acidic properties.

  34. Full Papers

    1. Ternary Ag/MgO-SiO2 Catalysts for the Conversion of Ethanol into Butadiene

      Wout Janssens, Dr. Ekaterina V. Makshina, Pieter Vanelderen, Dr. Filip De Clippel, Kristof Houthoofd, Stef Kerkhofs, Prof. Dr. Johan A. Martens, Prof. Dr. Pierre A. Jacobs and Prof. Dr. Bert F. Sels

      Article first published online: 19 NOV 2014 | DOI: 10.1002/cssc.201402894

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      Renewable route to butadiene: A silver-loaded MgO-SiO2 catalyst is active in the direct formation of butadiene from ethanol. Preparation steps have significant impact on internal organization of the final catalyst in terms of redox-acid/base properties. Based on extensive characterizations, a model is constructed to describe the catalytic activity of this system.

  35. Communications

    1. Selective Electrocatalytic Oxidation of Sorbitol to Fructose and Sorbose

      Dr. Youngkook Kwon, Dr. Ed de Jong, Dr. Jan Kees van der Waal and Prof. Dr. Marc T. M. Koper

      Article first published online: 14 NOV 2014 | DOI: 10.1002/cssc.201402880

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      New cats on the block: A new electrocatalytic method for the selective electrochemical oxidation of sorbitol to fructose and sorbose is developed by using a platinum electrode promoted by p-block metal atoms. By studying a range of C4, C5, and C6 polyols, it is found that the promoter interferes with the stereochemistry of the polyol and thereby modifies its reactivity.

  36. Full Papers

    1. Superior Ion-Conducting Hybrid Solid Electrolyte for All-Solid-State Batteries

      Prof. Dr. Jae-Kwang Kim, Prof. Johan Scheers, Prof. Tae Joo Park and Prof. Youngsik Kim

      Article first published online: 13 NOV 2014 | DOI: 10.1002/cssc.201402969

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      Solid-state battery: A hybrid solid electrolyte prepared by novel facile method has high room temperature ionic conductivity, excellent thermal stability, and low interface resistance with good contact. With the hybrid solid electrolyte, the pouch-type solid-state battery exhibits high initial discharge capacity, especially at room temperature.

    2. Enhanced Performance of Mixed-Matrix Membranes through a Graft Copolymer-Directed Interface and Interaction Tuning Approach

      Won Seok Chi, Sang Jin Kim, Seung-Joon Lee, Prof. Youn-Sang Bae and Prof. Jong Hak Kim

      Article first published online: 13 NOV 2014 | DOI: 10.1002/cssc.201402677

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      Restricted access: A large improvement in gas permeability and selectivity are simultaneously obtained through an interface and interaction tuning approach based on an amphiphilic poly(vinyl chloride)-g-poly(oxyethylene methacrylate) (PVC-g-POEM). This approach maximizes the gas permeation of zeolite imidazole frameworks-8 (ZIF-8).

    3. Production of Renewable Hexanols from Mechanocatalytically Depolymerized Cellulose by Using Ir-ReOx/SiO2 catalyst

      Sibao Liu, Yasuyo Okuyama, Dr. Masazumi Tamura, Dr. Yoshinao Nakagawa, Akio Imai and Prof. Keiichi Tomishige

      Article first published online: 3 NOV 2014 | DOI: 10.1002/cssc.201403010

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      Let′s talk about hexanol: A high yield of renewable hexanols was obtained from depolymerized cellulose by using Ir-ReOx/SiO2 catalyst in biphasic system (n-decane+H2O). The cellulose is depolymerized by mechanocatalysis with the aid of H2SO4. The influence of solvent amount, reaction temperature, and hydrogen pressure is systematically investigated.

    4. CO2 Hydrogenation to Methanol on Supported Au Catalysts under Moderate Reaction Conditions: Support and Particle Size Effects

      Yeusy Hartadi, Dr. Daniel Widmann and Prof. Dr. R. Jürgen Behm

      Article first published online: 22 OCT 2014 | DOI: 10.1002/cssc.201402645

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      Golden times for methanol: The production of “green methanol” from CO2 and H2 represents an attractive approach for chemical energy conversion in renewable energy concepts. Oxide-supported Au catalysts are highly active for this reaction under moderate conditions, and we show how their catalytic performance (activity, selectivity) is correlated to their physical and chemical properties (nature of the support, Au particle size).

  37. Communications

    1. Controlling Porosity in Lignin-Derived Nanoporous Carbon for Supercapacitor Applications

      Ju-Won Jeon, Libing Zhang, Prof. Jodie L. Lutkenhaus, Dr. Dhrubojyoti D. Laskar, Dr. John P. Lemmon, Dr. Daiwon Choi, Dr. Manjula I. Nandasiri, Ali Hashmi, Prof. Jie Xu, Dr. Radha K. Motkuri, Dr. Carlos A. Fernandez, Dr. Jian Liu, Dr. Melvin P. Tucker, Peter B. McGrail, Prof. Bin Yang and Dr. Satish K. Nune

      Article first published online: 22 OCT 2014 | DOI: 10.1002/cssc.201402621

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      Low-cost renewable lignin is used as a precursor to produce high surface area, graphitized porous carbons for supercapacitor applications. Molecular weight and oxygen consumption during carbonization are critical factors in controlling the structure and, consequently, capacitor performance. The carbonized residues exhibit good electrochemical performance in terms of high specific capacitance, high energy density and power, and good capacity retention.

    2. Cost-Effective Synthesis of Amine-Tethered Porous Materials for Carbon Capture

      Dr. Weigang Lu, Mathieu Bosch, Prof. Dr. Daqiang Yuan and Prof. Dr. Hong-Cai Zhou

      Article first published online: 14 OCT 2014 | DOI: 10.1002/cssc.201402622

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      Energy-efficient carbon capture: A truly cost-efficient strategy for the synthesis of amine-tethered porous polymer networks has been developed. A network containing diethylenetriamine exhibits a high working capacity comparable to current state-of-art technology (30 % monoethanolamine solution), yet it requires only one third as much energy for regeneration. It has also been demonstrated that no capacity loss occurs after 50 adsorption–desorption cycles of CO2 in a temperature-swing adsorption process.

  38. Full Papers

    1. The Role of Hydroxyl Group Acidity on the Activity of Silica-Supported Secondary Amines for the Self-Condensation of n-Butanal

      Dr. Sankaranarayanapillai Shylesh, David Hanna, Joseph Gomes, Dr. Christian G. Canlas, Prof. Martin Head-Gordon and Prof. Alexis T. Bell

      Article first published online: 14 OCT 2014 | DOI: 10.1002/cssc.201402443

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      Co-operative effect: Self-condensation of n-butanal to 2-ethylhexenal can be significantly enhanced by controlling the Brønsted acidity of M[BOND]OH groups present on the surface of amine-tethered silica supports. The spacing between the amines and M[BOND]OH groups is crucial to maximize their co-operative action and to minimize acid-base neutralization. The reaction pathway is analyzed by DFT calculations.

  39. Cover Pictures

    1. You have free access to this content
      A Combinatorial Approach towards Water-Stable Metal–Organic Frameworks for Highly Efficient Carbon Dioxide Separation

      Zhigang Hu, Kang Zhang, Mei Zhang, Dr. Zhengang Guo, Prof. Jianwen Jiang and Prof. Dan Zhao

      Article first published online: 18 SEP 2014 | DOI: 10.1002/cssc.201402892

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      The Inside Back Cover shows the crystal structure of an ionized Zr metal–organic framework (MOF) and its selective adsorption of CO2 over N2 and CH4 for applications in clean energy and environmental sustainability. A library of 20 UiO-66-derived MOFs is synthesized in a combinatorial approach involving mixed ligand copolymerization and two post-synthetic modifications in tandem. These MOFs exhibit excellent water stabilities in a pH range of 1 to 12, together with high CO2 uptake capacities and selectivities as revealed by the analysis of 147 isotherms. This approach paves a way towards the systematic study of water-stable and affordable MOFs as highly efficient adsorbents for CO2 separation in the applications of post-combustion CO2 capture and natural gas upgrading. More details can be found in the Communication by Hu et al. on page ▪▪ (DOI: 10.1002/cssc.201402378).

    2. You have free access to this content
      Cost-Effective Synthesis of Amine-Tethered Porous Materials for Carbon Capture

      Dr. Weigang Lu, Mathieu Bosch, Prof. Dr. Daqiang Yuan and Prof. Dr. Hong-Cai Zhou

      Article first published online: 27 MAY 2014 | DOI: 10.1002/cssc.201400099

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      The Inside Cover picture shows an amine-tethered porous polymer network and its application for carbon capture from flue gas. This polymer based on diethylenetriamine, PPN-125-DETA, exhibits a working capacity comparable to industrial benchmark monoethanolamine (MEA) solutions. More importantly, the energy cost for the regeneration of PPN-125-DETA is only one third of MEA solutions; therefore, the energy penalty could be reduced from 30 % to 10 % if PPN-125-DETA were to replace MEA solutions. Given its truly cost-effective and industrially scalable synthetic procedure as well as its superior cyclability, PPN-125-DETA is a very promising new material for carbon-capture-related clean energy applications. More details can be found in the Communication by Zhou et al. on page ▪▪ (DOI: 10.1002/cssc.201402622).

    3. You have free access to this content
      The Role of Hydroxyl Group Acidity on the Activity of Silica-Supported Secondary Amines for the Self-Condensation of n-Butanal

      Dr. Sankaranarayanapillai Shylesh, David Hanna, Joseph Gomes, Dr. Christian G. Canlas, Prof. Martin Head-Gordon and Prof. Alexis T. Bell

      Article first published online: 27 MAY 2014 | DOI: 10.1002/cssc.201400100

      Thumbnail image of graphical abstract

      The Back Cover picture shows the utility of mesoporous silica-supported secondary amine catalysts for the sustainable production of diesel fuel or additives from biomass-derived platform molecules. As fermentation products possess lower carbon numbers coupling chemistry is needed to design larger molecules. To realize selective coupling, we developed a highly efficient solid-base organocatalyst for the self-condensation of n-butanal to 2-ethylhexenal by grafting site-isolated amines on tailored silica surfaces. The spacing between the amines and M-OH groups (M=Al, Ti, Zr, Sn) is crucial to maximize their co-operative action and to minimize acid–base neutralization. The catalytic activity can be significantly altered by controlling the Brønsted acidity of the M-OH species. More details can be found in the Full Paper by Shylesh et al. on page ▪▪ (DOI: 10.1002/cssc.201402443).

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