Bifunctional Metal Complex Catalysts for the Processes of Fine Organic Synthesis
Z. P. PAI
Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences,
Pr. Akademika Lavrentyeva 5, Novosibirsk 630090 (Russia)
E-mail: zpai@catalysis.ru
Keywords: peroxopolyoxometallates, EXAFS, Raman and IR spectroscopy, phase-transfer catalysts, fine organic synthesis
Pages: 251–261
Abstract
Modern approaches to the development of ecologically and economically acceptable methods for obtaining a number of industrially essential products are considered. The promising character of the application of phase-transfer catalysis method for reactions proceeding in liquid two-phase systems with the use of ecologically favourable oxidizing agent – hydrogen peroxide – was demonstrated. Results of integrated studies of the structural characteristics of tungsten peroxopolyoxocomplexes formed in the interaction of the aqueous solutions of phosphotungstic heteropolyacid with hydrogen peroxide by means of EXAFS, Raman and IR spectroscopy are presented. The synthesized catalysts Q3{PO4[WO(O2)2]4}, where Q3 is a quaternary ammonium cation, were tested in the reactions of oxidation of organic substrates with 30–35 % H2O2 solutions.
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