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Determination of the Critical Micelle Concentration of Imidazolium Ionic Liquids in Aqueous Hydrogen Peroxide

Determination of the Critical Micelle Concentration of Imidazolium Ionic Liquids in Aqueous Hydrogen Peroxide

Bastian Zehner, Fabian Schmidt, Wolfgang Korth, Mirza Cokoja, Andreas Jess

Langmuir. 2019 Dec 10;35(49):16297-16303.

PMID: 31722181

Abstract:

The critical micelle concentrations (CMCs) of several imidazolium-based ionic liquids (ILs) in aqueous H2O2 (50 wt % in H2O) were determined by tensiometry, conductometry, and the rate of catalytic epoxidation of cis-cyclooctene. CMC values in aqueous H2O2 were significantly lower compared to values in pure water. In both H2O2 solution and water, the CMC of all ILs decreases with an increasing alkyl chain length and increases with a rising temperature. The degree of micelle ionization of 1-methyl-3-octylimidazolium tetrafluoroborate ([OMIM][BF4]) was calculated by conductometry in a temperature range of 22-70 °C.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP244193520	1-Methyl-3-octylimidazolium tetrafluoroborate		244193-52-0	Price

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