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Catalytic properties of thermally decomposed 12-molybdophosphoric and l0-molybdo-2-vanadophosphoric acids

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Abstract

Changes in the structural and surface properties of 12-molybdophosphoric (abbreviated as PM012) and 10-molybdo-2-vanadophosphoric (abbreviated as PM010V2) acids as they are decomposed at high temperatures have been studied by IR, XRD, XPS, and TPD experiments. PMo12 simply decomposes into MoO3 by heat-treatment at 580C, but PMo10V2 yields a mixed oxide whose properties are different from those of either MoO3 or V2O3. After the thermal decomposition, PMo12 loses the initial acidic and rt’dox properties almosl completely but PMo10V2 retains some extent of the redox capability that is larger than that of MoO3 and V3O5. The redox capability of the mixed oxide obtained by PMo10V2 decomposition is correlated with its catalytic activity in oxidation processes.

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Authors and Affiliations

  1. Department of Chemical Engineering, Seoul National University, Shinlim-dong San 56-1, Kwanak-ku, 151-742, Seoul, Korea

    In Kyu Song, Sang Heup Moon & Wha Young Lee

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  1. In Kyu Song
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  2. Sang Heup Moon
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  3. Wha Young Lee
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Song, I.K., Moon, S.H. & Lee, W.Y. Catalytic properties of thermally decomposed 12-molybdophosphoric and l0-molybdo-2-vanadophosphoric acids. Korean J. Chem. Eng. 8, 33–38 (1991). https://doi.org/10.1007/BF02697695

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  • DOI: https://doi.org/10.1007/BF02697695

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