Modifying the Electrocatalytic Selectivity of Oxidation Reactions with Ionic Liquids
Yang T, Yang J, Deng X, Franz E, Fromm L, Taccardi N, Liu Z, Görling A, Wasserscheid P, Brummel O, Libuda J (2022)
Publication Type: Journal article
Publication year: 2022
Journal
Abstract
The "solid catalyst with ionic liquid layer" (SCILL) is an extremely successful new concept in heterogeneous catalysis. The idea is to boost the selectivity of a catalyst by its modification with an ionic liquid (IL). Here, we show that it is possible to use the same concept in electrocatalysis for the selective transformation of organic compounds. We scrutinize the electrooxidation of 2,3-butanediol, a reaction which yields two products, singly oxidized acetoin and doubly oxidized diacetyl. When adding the IL (1-ethyl-3-methyl-imidazolium trifluormethanesulfonate, [C(2)C(1)Im][OTf]), the selectivity for acetoin increases drastically. By in situ spectroscopy, we analyze the underlying mechanism: Specific adsorption of the IL anions suppresses the activation of water for the second oxidation step and, thus, enhances the selectivity for acetoin. Our study demonstrates the great potential of this approach for selective transformation of organic compounds.
Authors with CRIS profile
Tian Yang
Lehrstuhl für Katalytische Grenzflächenforschung
Juntao Yang
Lehrstuhl für Katalytische Grenzflächenforschung
Xin Deng
Lehrstuhl für Katalytische Grenzflächenforschung
Evanie Franz
Collaborative Research Centre 1452/1 Catalysis at Liquid Interfaces (CLINT)
Lukas Fromm
Lehrstuhl für Theoretische Chemie
Nicola Taccardi
Lehrstuhl für Chemische Reaktionstechnik
Andreas Görling
Lehrstuhl für Theoretische Chemie
Peter Wasserscheid
Lehrstuhl für Chemische Reaktionstechnik
Olaf Brummel
Lehrstuhl für Katalytische Grenzflächenforschung
Jörg Libuda
Lehrstuhl für Katalytische Grenzflächenforschung
Involved external institutions
China (CN)How to cite
APA:
Yang, T., Yang, J., Deng, X., Franz, E., Fromm, L., Taccardi, N.,... Libuda, J. (2022). Modifying the Electrocatalytic Selectivity of Oxidation Reactions with Ionic Liquids. Angewandte Chemie International Edition. https://doi.org/10.1002/anie.202202957
MLA:
Yang, Tian, et al. "Modifying the Electrocatalytic Selectivity of Oxidation Reactions with Ionic Liquids." Angewandte Chemie International Edition (2022).
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