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Kinetics of Epoxidation of Cyclooctene with Ionic Liquids Containing Tungstate as Micellar Catalyst

Title data

Zehner, Bastian ; Korth, Wolfgang ; Schmidt, Fabian ; Cokoja, Mirza ; Jess, Andreas:
Kinetics of Epoxidation of Cyclooctene with Ionic Liquids Containing Tungstate as Micellar Catalyst.
In: Chemical Engineering & Technology. Vol. 44 (2021) Issue 12 . - pp. 2374-2381.
ISSN 1521-4125
DOI: https://doi.org/10.1002/ceat.202100102

Official URL: Volltext

Abstract in another language

The kinetics of cyclooctene epoxidation with H2O2 by micellar catalysis was studied. As catalyst, an ionic liquid (IL) containing the catalytically active tungstate anion was used. The tungstate IL forms micelles in the aqueous H2O2 phase. It is simply formed by dissolving sodium tungstate and 1-octyl-3-methylimidazolium tetrafluoroborate OMIMBF4 in aqueous H2O2. For the epoxidation of cyclooctene by micellar catalysis, a power law kinetic model was determined that takes the critical micelle concentration into account. The kinetics of the OMIMBF4/Na2WO4 catalyst is similar to pure OMIM2WO4, which indicates that the active species is formed in situ. Addition of phenylphosphonic acid improves the activity of the tungstate IL. The most effective catalyst was tested in a semi-continuous and continuous loop reactor.

Further data

Item Type: Article in a journal
Refereed: Yes
Keywords: Cyclooctene; Epoxidation; Ionic liquids; Kinetics; Micellar catalysis
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 Feb 2022 08:51
Last Modified: 11 Apr 2022 08:54
URI: https://eref.uni-bayreuth.de/id/eprint/68603