Regeneration of Catalysts Based on Aqueous Solutions of Mo-V-Phosphoric Acids under Increased O2 Pressure
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: 663-668
Abstract
Oxidation of the 0.2 M solutions of H7+mP(VIV)m(VV)4-mMo8O40 (HmHPA-4) by oxygen at temperatures from 373 to 433 K under O2 pressure up to 8 atm (810 kPa) is investigated. The maximal reaction rate is observed at 433 K. At a higher temperature, partially oxidized 0.2 M solutions of HmHPA-4 are thermally unstable. With an increase in the extent of oxidation of HmHPA-4 solutions, the apparent activation energy increases.
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