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

Title data

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. Vol. 42 (2019) Issue 1 . - pp. 232-240.
ISSN 1521-4125
DOI: https://doi.org/10.1002/ceat.201800399

Abstract in another language

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.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Epoxidation; Ionic Liquids; Micellar catalysis; Perrhenate; Surfactant ionic liquids
Institutions of the University: Faculties > Faculty of Engineering Science
Faculties > Faculty of Engineering Science > Chair Chemical Engineering
Faculties > Faculty of Engineering Science > Chair Chemical Engineering > Chair Chemical Engineering - Univ.-Prof. Dr.-Ing. Andreas Jess
Faculties
Result of work at the UBT: Yes
DDC Subjects: 500 Science > 540 Chemistry
600 Technology, medicine, applied sciences > 600 Technology
600 Technology, medicine, applied sciences > 620 Engineering
600 Technology, medicine, applied sciences > 660 Chemical engineering
Date Deposited: 08 Jan 2019 08:27
Last Modified: 08 Jan 2019 08:27
URI: https://eref.uni-bayreuth.de/id/eprint/46809