Chemical Engineering & Technology

Cover image for Vol. 37 Issue 10

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

Impact Factor: 2.175

ISI Journal Citation Reports © Ranking: 2013: 39/133 (Engineering Chemical)

Online ISSN: 1521-4125

Associated Title(s): Chemie Ingenieur Technik, ChemBioEng Reviews, Energy Technology

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  1. Research Articles

    1. Foaming Process from Polystyrene/p-Cymene Solutions Using CO2

      Cristina Gutiérrez, Juan F. Rodríguez, Ignacio Gracia, Antonio de Lucas and Maria T. García

      Article first published online: 31 JUL 2014 | DOI: 10.1002/ceat.201300780

      Thumbnail image of graphical abstract

      The foaming of polystyrene to achieve microcellular structure was performed at room temperature using an environmentally friendly technology. Low temperatures are required due to the presence of p-cymene, a terpene oil which increases the mobility of the polymeric chains. The foam structure can be tailored by altering pressure and temperature.

  2. Communications

    1. Corrosive Degeneration of Autoclaves for the Ammonothermal Synthesis: Experimental Approach and First Results

      Benjamin Hertweck, Thomas G. Steigerwald, Nicolas S. A. Alt and Eberhard Schluecker

      Article first published online: 30 JUL 2014 | DOI: 10.1002/ceat.201300719

      Thumbnail image of graphical abstract

      Alloy 718, a material of high corrosion resistance, degenerates in supercritical ammonia with acidic mineralizers. EDX spectroscopy in combination with optical microscopy and micro indentation is a suitable tool for analyzing the corrosion behavior and allows a detailed investigation of the corrosion phenomena for Alloy 718 under ammonothermal conditions.

  3. Research Articles

    1. Processing of Lovage into High-Value Components Using Supercritical CO2 and Pressurized Liquid Extraction

      Aurelija Kemzūraitė, Petras R. Venskutonis and Diana Navikienė

      Article first published online: 3 JUL 2014 | DOI: 10.1002/ceat.201300735

      Thumbnail image of graphical abstract

      High-pressure techniques, namely supercritical CO2 and pressurized liquid extraction, demonstrate the potential to significantly increase the efficiency of processing of different anatomical parts of lovage into high-value fractions based on their solubility in nonpolar (CO2) and protonic (methanol/water) solvents under supercritical and subcritical conditions.

  4. Communications

    1. Sterilization of Medical Products from Collagen by Means of Supercritical CO2

      Volker Herdegen, Alexander Felix, Roland Haseneder, Jens-Uwe Repke, Kathrin Leppchen-Fröhlich, Ina Prade and Michael Meyer

      Article first published online: 6 JUN 2014 | DOI: 10.1002/ceat.201300679

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      Due to its favorable properties, collagen is increasingly used in medical devices. Nowadays, the necessary sterilization of this sensitive material may be conducted only by ethylenoxide and γ irradiation. To overcome the drawbacks connected to those methods, a new sterilization procedure using supercritical CO2 and the addition of small amounts of sterilization aid is successfully tested.

  5. Research Articles

    1. Simulating Supercritical Water Jets with a Variable Turbulent Prandtl Number

      Martin J. Schuler, Tobias Rothenfluh, Panagiotis Stathopoulos, Dragana Brkic, Thierry Meier and Philipp Rudolf von Rohr

      Article first published online: 8 MAY 2014 | DOI: 10.1002/ceat.201300661

      Thumbnail image of graphical abstract

      Due to the strongly varying fluid properties of water around the pseudo-critical point, difficulties in simulating the thermal field of submerged supercritical water jets were detected. A locally varying turbulent Prandtl number was implemented to significantly improve numerical predictions with respect to axial temperature measurements

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