ChemCatChem

Cover image for Vol. 8 Issue 18

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

Editor: Michael Rowan; Editorial Board Chairs: Uwe Bornscheuer, Luis A. Oro, Bert Weckhuysen

Impact Factor: 4.724

ISI Journal Citation Reports © Ranking: 2015: 29/144 (Chemistry Physical)

Online ISSN: 1867-3899

Associated Title(s): Advanced Synthesis & Catalysis, Angewandte Chemie International Edition, Chemistry - A European Journal, ChemBioChem, ChemElectroChem, ChemPhotoChem, ChemPhysChem, ChemSusChem

VIEW

  1. 1 - 20
  2. 21 - 40
  3. 41 - 60
  1. Full Papers

    1. Seawater-Based Biocatalytic Strategy: Stereoselective Reductions of Ketones with Marine Yeasts

      Dr. Immacolata Serra, Benedetta Guidi, Dr. Gaetan Burgaud, Dr. Martina L. Contente, Prof. Patrizia Ferraboschi, Dr. Andrea Pinto, Prof. Concetta Compagno, Prof. Francesco Molinari and Dr. Diego Romano

      Version of Record online: 15 SEP 2016 | DOI: 10.1002/cctc.201600947

      Thumbnail image of graphical abstract

      All at sea: Marine yeasts from deep-sub-seafloor sediments were grown in seawater and used as biocatalysts to perform the stereoselective reduction of different ketones in seawater as well. Strains of Meyerozyma guilliermondii and Rhodotorula mucilaginosa were able to reduce different aromatic ketones with high molar conversions and moderate-to-high enantioselectivity.

  2. Communications

    1. Engineering the Amine Transaminase from Vibrio fluvialis towards Branched-Chain Substrates

      Dr. Maika Genz, Okke Melse, Dr. Sandy Schmidt, Dr. Clare Vickers, Dr. Mark Dörr, Tom van den Bergh, Dr. Henk-Jan Joosten and Prof. Dr. Uwe T. Bornscheuer

      Version of Record online: 15 SEP 2016 | DOI: 10.1002/cctc.201601007

      Thumbnail image of graphical abstract

      If you know what amine: On the basis of bioinformatic analysis of the binding site of amine transaminases, a seven-site combinatorial library of the enzyme from V. fluvialis is created. High-throughput screening of this library leads to the identification of enzyme variants able to convert sterically demanding ketones into the corresponding chiral amines with high to excellent optical purities and yields.

  3. Full Papers

    1. Bimetallic and Plasmonic Ag–Au on TiO2 for Solar Water Splitting: An Active Nanocomposite for Entire Visible-Light-Region Absorption

      Kshirodra K. Patra and Dr. Chinnakonda S. Gopinath

      Version of Record online: 15 SEP 2016 | DOI: 10.1002/cctc.201600937

      Thumbnail image of graphical abstract

      Silver lining to water splitting: Light absorption to the wide wavelength range within the visible-light-region is demonstrated with a combination of two different plasmonic metals Ag+Au on TiO2. H2 generation from water splitting or photocurrent generation on Ag on Au-TiO2 increases at least twice that of Ag or Au alone on TiO2.

    2. Facile Strategy to Fabricate Uniform Black TiO2 Nanothorns/Graphene/Black TiO2 Nanothorns Sandwichlike Nanosheets for Excellent Solar-Driven Photocatalytic Performance

      Xiangcheng Zhang, Jianan Wang, Weiyao Hu, Kaifu Zhang, Bojing Sun, Guohui Tian, Baojiang Jiang, Kai Pan and Wei Zhou

      Version of Record online: 14 SEP 2016 | DOI: 10.1002/cctc.201600934

      Thumbnail image of graphical abstract

      Nanothorns to reach the sun: Black TiO2 nanothorns/graphene/black TiO2 nanothorns sandwichlike nanosheets with controllable growth orientation and narrow band gap are fabricated by a facile strategy of solvothermal approach and surface hydrogenation. They exhibit excellent solar-driven photocatalytic performance, with the sandwichlike structure favoring light absorption and separation of photogenerated charge carriers.

  4. Communications

    1. Surfactant-Free Palladium Nanoparticles Encapsulated in ZIF-8 Hollow Nanospheres for Size-Selective Catalysis in Liquid-Phase Solution

      Xiaoshi Wang, Mingyu Li, Dr. Changyan Cao, Chang Liu, Jian Liu, Yanan Zhu, Sidi Zhang and Prof. Dr. Weiguo Song

      Version of Record online: 14 SEP 2016 | DOI: 10.1002/cctc.201600846

      Thumbnail image of graphical abstract

      Size matters: The encapsulation of surfactant-free Pd nanoparticles in ZIF-8 hollow nanospheres is achieved. Pd@ZIF-8 hollow nanospheres show excellent size-selective catalysis properties in the liquid-phase hydrogenation of olefins. As a result of the uniform pore size of the ZIF-8 shell, the catalyst shows high activity for the hydrogenation of 1-hexene but very low activity for larger molecules such as cis-cyclooctene and trans-stilbene.

  5. Full Papers

    1. Enhanced Photoelectrochemical Performance of the BiVO4/Zn:BiVO4 Homojunction for Water Oxidation

      Dr. Jinzhan Su, Cong Liu, Dongyu Liu, Dr. Mingtao Li and Jinglan Zhou

      Version of Record online: 14 SEP 2016 | DOI: 10.1002/cctc.201600767

      Thumbnail image of graphical abstract

      Up the junction: Surface Zn doping was used to fabricate a BiVO4/Zn:BiVO4 homojunction with a type II band alignment, which enhanced the charge separation and photoelectrochemical performance of BiVO4.

    2. Reaction and Mechanistic Studies of Heterogeneous Hydroamination over Support-Stabilized Gold Nanoparticles

      Manideepa Sengupta, Dr. Arijit Bag, Subhasis Das, Astha Shukla, L. N. Sivakumar Konathala, C. A. Naidu and Dr. Ankur Bordoloi

      Version of Record online: 14 SEP 2016 | DOI: 10.1002/cctc.201600762

      Thumbnail image of graphical abstract

      Au hydroamination catalyst: The in situ synthesis of gold nanoparticles in the surface cavity of mesoporous nitrogen-rich carbon (MCN) allowed them to be utilized efficiently as a catalyst in the hydroamination of phenylacetylene with aniline, with more than 98 % selectivity towards the Markovnikov addition product. The mechanistic pathway has been studied with DFT-based calculations, which predict the stabilization of tetranuclear Au clusters over the MCN support.

    3. Copper-Modified Gold Nanoparticles as Highly Selective Catalysts for Glycerol Electro-Oxidation in Alkaline Solution

      Larissa Thia, Mingshi Xie, Dr. Zhaolin Liu, Dr. Xiaoming Ge, Dr. Yizhong Lu, Prof. Wenmei Eileen Fong and Prof. Xin Wang

      Version of Record online: 14 SEP 2016 | DOI: 10.1002/cctc.201600725

      Thumbnail image of graphical abstract

      C3 selectivity is important: The C3 selectivity of carbon-supported Au nanoparticles for glycerol electro-oxidation is significantly enhanced by the interaction of Au with electrodeposited Cu species. Notably, the C3 selectivity of supported Au nanoparticles doubles after 90 min of Cu electrodeposition at +0.015 V.

    4. Spin Catalysis over Conductive Solids: Enhancing the Rate of Model C−C Bond Cracking over Carbon Nanoparticles

      Dr. Oleksiy V. Khavryuchenko and Prof. Gilles H. Peslherbe

      Version of Record online: 14 SEP 2016 | DOI: 10.1002/cctc.201600723

      Thumbnail image of graphical abstract

      Spin catalysis: The concept of spin catalysis is illustrated by quantum-chemical calculations for model C−C bond cleavage in ethane. The rate of reaction is shown to be enhanced by allowing normally forbidden spin flip mediated by a spin-conductive half-metallic carbon nanoparticle through a common electronic system, and possible formation of a nascent triplet radical pair that is unable to recombine.

  6. Communications

    1. Syndiotactic Polymer of Allylcyclopentane by a Metallocene Catalyst

      Dr. Wei Wang, Dr. Liping Hou and Jianfang Sheng

      Version of Record online: 14 SEP 2016 | DOI: 10.1002/cctc.201600711

      Thumbnail image of graphical abstract

      Shape games: Syndiospecific (co)polymerization of higher α-olefins is performed by using a metallocene catalyst. A copolymer of allylcyclopentane with a linear α-olefin shows weakened syndiotacticity, and the copolymer of allylcyclopentane with 4-methyl-1-pentene or allylcyclohexane keeps the high syndiotacticity. It follows that the monomer employed in copolymerization with a similar “shape” gives the copolymer with a similar microstructure.

  7. Full Papers

    1. Combined Function of Brønsted and Lewis Acidity in the Zeolite-Catalyzed Isomerization of Glucose to Fructose in Alcohols

      Dr. Shunmugavel Saravanamurugan, Prof. Dr. Anders Riisager, Dr. Esben Taarning and Dr. Sebastian Meier

      Version of Record online: 14 SEP 2016 | DOI: 10.1002/cctc.201600783

      Thumbnail image of graphical abstract

      Acid traps sweetener: The interplay of active sites in zeolites is complex. The zeolites function as bifunctional catalysts for Lewis-acid-catalyzed isomerization of glucose to fructose and for Brønsted-acid-catalyzed trapping of fructose as fructosides. This leads to kinetic product control and enables higher than equilibrium yields of fructose to be obtained after hydrolysis.

    2. Three-Dimensional Analytical Surface Quantification of Heterogeneous Silica-Alumina Catalyst Supports

      Dr. Lucian Roiban, Prof. Ovidiu Ersen, Dr. Charles Hirlimann, Dr. Marc Drillon, Dr. Alexandra Chaumonnot, Laurent Lemaitre, Dr. Anne-Sophie Gay and Dr. Loïc Sorbier

      Version of Record online: 14 SEP 2016 | DOI: 10.1002/cctc.201600543

      Thumbnail image of graphical abstract

      3 D pictures: The ability of energy-filtered transmission electron microscopy (EFTEM) tomography to provide 3 D chemical maps at the nanoscale opens a new way to analyze heterogeneous materials quantitatively. EFTEM tomography is employed in the study of amorphous silica-alumina catalyst supports.

  8. Communications

    1. Reconstruction of the Catalytic Pocket and Enzyme–Substrate Interactions To Enhance the Catalytic Efficiency of a Short-Chain Dehydrogenase/Reductase

      Aipeng Li, Dr. Lidan Ye, Xiaohong Yang, Bei Wang, Chengcheng Yang, Dr. Jiali Gu and Prof. Hongwei Yu

      Version of Record online: 13 SEP 2016 | DOI: 10.1002/cctc.201600921

      Thumbnail image of graphical abstract

      Reconstructing enzymes: The catalytic efficiency of the short-chain dehydrogenase/reductase EbSDR8 is significantly improved by reconstructing the catalytic pocket and enzyme–substrate interactions. The resulting variants show significantly improved catalytic efficiencies towards the reduction of a series of prochiral ketones; in some cases, the efficiency is more than 15-fold greater than that of wildtype EbSDR8.

  9. Full Papers

    1. Triazine-Based Porous Organic Polymer with Good CO2 Gas Adsorption Properties and an Efficient Organocatalyst for the One-Pot Multicomponent Condensation Reaction

      Piyali Bhanja, Sauvik Chatterjee and Prof. Dr. Asim Bhaumik

      Version of Record online: 12 SEP 2016 | DOI: 10.1002/cctc.201600840

      Thumbnail image of graphical abstract

      Porous polymer for CO2 capture and heterogeneous catalysis: A new porous organic polymer (poly-divinylbenzene-co-triallyloxytriazine) has been synthesized through radical co-polymerization. The polymer showed good CO2 adsorption properties and excellent catalytic activity for the synthesis of 2-amino-4 H-chromenes under microwave irradiation.

  10. Communications

    1. Selectivity Trends in Olefin Epoxidations Catalyzed by (NNNN)Manganese(+II) Complexes using Trifluoroethanol as the Solvent

      Samuel Lorenz and Prof. Dr. Bernd Plietker

      Version of Record online: 9 SEP 2016 | DOI: 10.1002/cctc.201600755

      Thumbnail image of graphical abstract

      Evening out the odds: An unexpected odd–even-type selectivity trend in the diastereoselective epoxidation of unfunctionalized aliphatic alkenes by using a non-heme-type Mn catalyst in trifluoroethanol as the solvent is observed. (♦=octene, ▪=heptene, ▴=nonene)

  11. Full Papers

    1. Creating Accessible Active Sites in Hierarchical MFI Zeolites for Low-Temperature Acid Catalysis

      Andrea Erigoni, Dr. Stephanie H. Newland, Dr. Geo Paul, Prof. Leonardo Marchese, Prof. Robert Raja and Prof. Enrica Gianotti

      Version of Record online: 9 SEP 2016 | DOI: 10.1002/cctc.201600729

      Thumbnail image of graphical abstract

      Pore sorting: Hierarchically-porous architectures of H-ZSM-5 with different Si/Al ratios are highly active and selective for low-temperature acid catalysis. This architecture is introduced by a versatile desilication strategy, and the nature, strength, and the accessibility of the acid sites is elucidated by a variety of physico-chemical characterization tools.

  12. Communications

    1. Expeditious Assembly of Fluorenones through Domino Reactions of Benzoyl Chlorides with Arylboronic Acids Catalyzed by ONO Pincer-like Palladium(II) Complexes

      Arumugam Vignesh, Prof. Dr. Werner Kaminsky and Prof. Dr. Nallasamy Dharmaraj

      Version of Record online: 9 SEP 2016 | DOI: 10.1002/cctc.201600717

      Thumbnail image of graphical abstract

      Let′s play DomONOes! PdII complexes featuring ONO pincer-type ligands are synthesized and utilized as efficient homogeneous catalysts for the domino reactions of benzoyl chlorides with arylboronic acids to yield a library of fluorenones. The reaction proceeds smoothly in H2O/MeOH media at a catalyst loading of 0.1 mol % under mild reaction conditions in an open flask, and the catalyst can be reused over six consecutive runs.

    2. Ruthenium Complexes of 2,2′-Bipyridine-6,6′-diphosphonate Ligands for Water Oxidation

      Jayneil M. Kamdar, David C. Marelius, Dr. Curtis E. Moore, Prof. Dr. Arnold L. Rheingold, Prof. Dr. Diane K. Smith and Prof. Dr. Douglas B. Grotjahn

      Version of Record online: 8 SEP 2016 | DOI: 10.1002/cctc.201600359

      Thumbnail image of graphical abstract

      Taking charge with phosphonates: The synthesis and catalysis-relevant chemical properties of the first water oxidation complexes deliberately bearing phosphonate groups positioned to serve as metal-bound ligands are described. The pH-switchable properties of phosphonates afford the opportunity to study the effect of charge on catalytic activity. Charge states of P−OH/P−OR groups have a significant influence on redox and catalytic properties.

  13. Full Papers

    1. On the Synergism between Cu and Ni for Photocatalytic Hydrogen Production and their Potential as Substitutes of Noble Metals

      Imran Majeed, Dr. Muhammad Amtiaz Nadeem, Ejaz Hussain, Dr. Geoffrey I. N. Waterhouse, Prof. Dr. Amin Badshah, Prof. Dr. Azhar Iqbal, Prof. Dr. Muhammad Arif Nadeem and Prof. Dr. Hicham Idriss

      Version of Record online: 8 SEP 2016 | DOI: 10.1002/cctc.201600697

      Thumbnail image of graphical abstract

      Noble metal substitutes: A series of Cu(OH)2–Ni(OH)2/P25 photocatalysts was prepared by co-deposition–precipitation (total metal loading ≈1 wt %) and their performance was evaluated for H2 production. Among this series, the 0.8 Cu(OH)2–0.2 Ni(OH)2/P25 photocatalyst demonstrated very high H2 production rates in 20 vol % ethanol/water and 5 vol % glycerol/water mixtures (10 and 22 mmol h−1 g−1, respectively).

    2. Highly Selective and Stable NiSn/SiO2 Catalyst for Isobutane Dehydrogenation: Effects of Sn Addition

      Dr. Guowei Wang, Dr. Haoren Wang, Huanling Zhang, Dr. Qingqing Zhu, Prof. Chunyi Li and Prof. Honghong Shan

      Version of Record online: 8 SEP 2016 | DOI: 10.1002/cctc.201600685

      Thumbnail image of graphical abstract

      Effectively separated: The promoting mechanism of Sn addition to Ni/SiO2 catalysts was interpreted as a result of geometric and electronic effects. On one hand, Sn addition dispersed aggregated Ni particles effectively, breaking the active sites for hydrogenolysis. On the other hand, additional electrons provided by Sn led to a high electronic density of Ni, facilitating the desorption of isobutene and suppressing secondary reactions.

VIEW

  1. 1 - 20
  2. 21 - 40
  3. 41 - 60

SEARCH

SEARCH BY CITATION