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Kinetic Model of Two-Phase Epoxidation with Ionic Liquids as Micellar Catalysts

Titelangaben

Schäffer, Johannes ; Zehner, Bastian ; Korth, Wolfgang ; Cokoja, Mirza ; Jess, Andreas:
Kinetic Model of Two-Phase Epoxidation with Ionic Liquids as Micellar Catalysts.
In: Chemical Engineering & Technology. Bd. 42 (2019) Heft 1 . - S. 232-240.
ISSN 1521-4125
DOI: https://doi.org/10.1002/ceat.201800399

Abstract

Abstract The biphasic catalytic epoxidation of cyclooctene using the ionic liquid (IL) 1,2-dimethyl-3-octyl-imidazolium perrhenate ([OMMIM]ReO4) as micellar catalyst and H2O2 as oxidant was investigated. Kinetic experiments were carried out in the intrinsic kinetic regime as proved by variation of stirring rate and temperature. Variation of catalyst concentration allowed for determination of the critical micellar concentration (CMC) of the catalytic IL. The effect of substrate concentrations on the reaction rate was also assessed. Based on the experiments, a kinetic model adapted from enzyme catalysis was proposed to account for the micellar reaction environment. The model takes into account the onset of micelle formation at the CMC. The application of the kinetic model illustrated the good agreement with the experimental data. The model will be applied to other micellar epoxidation reactions and for the design of an appropriate reaction setup in the future.

Weitere Angaben

Publikationsform: Artikel in einer Zeitschrift
Begutachteter Beitrag: Ja
Keywords: Epoxidation; Ionic Liquids; Micellar catalysis; Perrhenate; Surfactant ionic liquids
Institutionen der Universität: Fakultäten > Fakultät für Ingenieurwissenschaften
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Chemische Verfahrenstechnik
Fakultäten > Fakultät für Ingenieurwissenschaften > Lehrstuhl Chemische Verfahrenstechnik > Lehrstuhl Chemische Verfahrenstechnik - Univ.-Prof. Dr.-Ing. Andreas Jess
Fakultäten
Titel an der UBT entstanden: Ja
Themengebiete aus DDC: 500 Naturwissenschaften und Mathematik > 540 Chemie
600 Technik, Medizin, angewandte Wissenschaften > 600 Technik
600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften
600 Technik, Medizin, angewandte Wissenschaften > 660 Chemische Verfahrenstechnik
Eingestellt am: 08 Jan 2019 08:27
Letzte Änderung: 08 Jan 2019 08:27
URI: https://eref.uni-bayreuth.de/id/eprint/46809