Journal
KINETICS AND CATALYSIS
Volume 60, Issue 6, Pages 790-795Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S0023158419050070
Keywords
specific conductance; high-vanadium heteropoly acids; homogeneous oxidation catalysts
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Funding
- Boreskov Institute of Catalysis, Siberian Branch, Russian Academy of Sciences [AAAA-A17-117041710081-1]
- Russian Fund for Basic Research [18-33-00073]
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Changes in the values of specific conductance chi of the solutions of high-vanadium Mo-V-P heteropoly acids (HPA-) in redox processes are determined for the first time for the HPA-7 solution of the overall composition H10P3\Mo18V7O84, which is a highly efficient catalyst for oxidation processes. The dependences of chi on [HPA-7] at different temperatures and degrees of reduction m and the dependence of chi on m, are found. The relationship between chi and the equilibrium composition of the HPA-7 solution is shown. It was confirmed that the regenerated HPA-7 solutions completely restore their conductance and other physicochemical properties (redox potential E, density, viscosity, and pH), thereby proving the high stability as homogeneous catalysts of oxidative processes.
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