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Synthesis, Physical Properties and Application of a Series of New Polyoxometalate-Based Ionic Liquids

Abstract : This paper deals with the preparation and the characterization of four new ionic liquids resulting from the pairing of various polyoxotungstates or polyoxomolybdates with the cation trihexyltetradecylphosphonium. The physical properties measured by different techniques evidence that the viscosity and the rheological behaviors of such POM-based ionic liquids, POM-ILs, strongly depend on the nature of the POM, especially its charge. Playing on the nature of the POM, we can indeed obtain Newtonian liquids or some much more viscous materials exhibiting characteristics of resins or pseudo-plastics. In a second part of this study, the potentialities of using such materials both as solvent and catalyst for the oxidation of a series of alcohols are presented as proof of concept. This part highlights great differences in strength and selectivity as a function of the POM-IL used. Furthermore, a very simple way to recycle the catalyst is also presented.
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https://hal.inrae.fr/hal-03120947
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Submitted on : Tuesday, January 26, 2021 - 8:35:50 AM
Last modification on : Tuesday, January 4, 2022 - 6:26:18 AM

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Yohan Martinetto, Salomé Basset, Bruce Pégot, Catherine Roch-Marchal, Franck Camerel, et al.. Synthesis, Physical Properties and Application of a Series of New Polyoxometalate-Based Ionic Liquids. Molecules, MDPI, 2021, 26 (2), ⟨10.3390/molecules26020496⟩. ⟨hal-03120947⟩

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