Publication Date:
2017-05-05
Description:
For technical applications of supported ionic liquids (IL), the stability of the IL layers both with regard to thermal decomposition and to losses by evaporation is of great importance. In this work, a new radio frequency based method is presented to determine the pore filling degree of supported ILs in situ and in a contactless way. As an example, the IL 1-ethyl-3-methylimidazolium bis(trifluoromethylsulfonyl)imide, which was supported on the internal surface of porous silica, was used. The complex permittivity of the porous solid coated with the IL increases linearly with the IL pore filling degree. Therefore, the evaporation rate of the IL in a fixed bed could be measured in situ in the reactor.
Print ISSN:
0930-7516
Electronic ISSN:
1521-4125
Topics:
Chemistry and Pharmacology
,
Process Engineering, Biotechnology, Nutrition Technology
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