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The Mechanism of Action of a Multicomponent Co-Mo-Bi-Fe-Sb-K-O Catalyst for the Partial Oxidation of Propylene to Acrolein: II. Changes in the Phase Composition of the Catalyst under Reaction Conditions

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Abstract

The structures of a complex multicomponent Co-Mo-Fe-Bi-K-Sb-O catalyst for the oxidation of propylene to acrolein and simpler catalysts from which some catalyst components were absent were studied by X-ray diffraction analysis. The phases of α-CoMoO4, β-CoMoO4, Fe2(MoO4)3, Bi2O3 ⋅ MoO3, Bi2O3 ⋅ 2MoO3, Bi2O3 ⋅ 3MoO3, oxidized molybdenum oxide, and reduced molybdenum oxide are the main components of the catalyst. Ternary compounds were not detected. Under catalytic reaction conditions, the relative amounts of the phases changed; this change suggests the occurrence of redox transformations with the participation of these phases, probably, at the interface.

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Authors and Affiliations

  1. Semenov Institute of Chemical Physics, Russian Academy of Sciences, Moscow, 117977, Russia

    D. P. Shashkin, O. V. Udalova, M. D. Shibanova & O. V. Krylov

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  1. D. P. Shashkin
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  2. O. V. Udalova
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  3. M. D. Shibanova
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  4. O. V. Krylov
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__________

Translated from Kinetika i Kataliz, Vol. 46, No. 4, 2005, pp. 580–584.

Original Russian Text Copyright © 2005 by Shashkin, Udalova, Shibanova, Krylov.

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Shashkin, D.P., Udalova, O.V., Shibanova, M.D. et al. The Mechanism of Action of a Multicomponent Co-Mo-Bi-Fe-Sb-K-O Catalyst for the Partial Oxidation of Propylene to Acrolein: II. Changes in the Phase Composition of the Catalyst under Reaction Conditions. Kinet Catal 46, 545–549 (2005). https://doi.org/10.1007/s10975-005-0107-7

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  • DOI: https://doi.org/10.1007/s10975-005-0107-7

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