Application of the CHNS-Analysis for Studying of Polyoxometallates and Ionic Liquids in the Catalytic Systems

Author:

Koscheeva Olga S.1,Kuznetsova Lidia I.2,Kuznetsova Nina I.2

Affiliation:

1. Nikolaev Institute of Inorganic Chemistry SB RAS

2. Boreskov Institute of Catalysis SB RAS

Abstract

The method of CHNS-analysis in combination with ³¹P NMR and UV-VIZ spectroscopy was used to study polyoxometallates and ionic liquids as components of liquid-phase catalytic systems. The composition of imidazolium and TBA salts of tungstоphosphate anions active in the olefin oxidation with H₂O₂ was determined. A method for quantification of [BMIm]Br, Bu₄NBr, Bu₄NHSO₄ in solutions using the CHNS-analysis is proposed. The capabilities of the technique with applying ionic liquids to an inert porous support are evaluated. Using the obtained results, the effect of ionic liquids in combination with a Pt/C catalyst and H₃PMo₁₂O₄₀ heteropolyacid in the oxidation of cyclohexane with О₂-Н₂ gas mixture was determined

Publisher

Siberian Federal University

Subject

General Chemical Engineering,General Chemistry

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