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Chemistry for Sustainable Development

2005 year, number 1

Recovery of Catalysts Around Н5PV2Mo10O40 Heteropoly Acid Solutions under a Pressure of Oxygen

E. G. ZHIZHINA, M. V. SIMONOVA, V. F. ODYAKOV and K. I. MATVEEV
Boreskov Institute of Catalysis, Siberian Branch of the Russian Academy of Sciences,
Pr. Akademika Lavrentyeva 5, Novosibirsk 630090 (Russia), E-mail: zhizh@catalysis.nsk.su
Pages: 45-50

Abstract

The possibility in principle for applying the concentrated aqueous solutions of heteropoly acid of composition H5PV2Mo10O40 (HPA-2) as the stable reversibly reacting oxidizers was shown. The reduced form of HPA-2 can be oxidized by oxygen at 353-433 K under a pressure of as much as 8 kg/cm2 thereby reclaiming HPA-2. An effect of temperature and pressure on the depth and reaction rate of oxidation has been investigated. Reduced and oxidized HPA-2 solutions are stable up to 463 K.