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Optical spectroscopic studies of CuCr2O4/γ-Al2O3. Catalyst deactivation under operation in catalytic heat generators

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Abstract

The state of metal cations in CuCr2O4/γ-Al2O3 catalysts under its operation in catalytic heat generators has been examined. IR spectra of adsorbed CO indicate copper ion reduction in the catalyst to Cu+, whose surface concentration was determined. Diffuse reflectance spectra have revealed that the initial catalyst contains Cr(VI), disappearing after reaction.

Abstract

Изучено состояние катионов металлов катализатора CuCr2O4/γ-Al2O3 в ходе его работы в каталитических генераторах тепла (КГТ). По ИК-спектрам адсорбированного CO показано, что наблюдается восстановление ионов меди в катализаторе до Cu+. Найдена концентрация поверхностных ионов Cu+. Методом электронной спектроскопии диффузного отражения показано, что в исходном состоянии катализатора имеется Cr(VI), который исчезает по мере работы катализатора.

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Authors and Affiliations

  1. Institute of Catalysis, 630090, Novosibirsk, USSR

    D. A. Arendarskii, E. A. Paukshtis, Z. R. Ismagilov & E. N. Yurchenko

Authors
  1. D. A. Arendarskii
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  2. E. A. Paukshtis
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  3. Z. R. Ismagilov
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  4. E. N. Yurchenko
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Arendarskii, D.A., Paukshtis, E.A., Ismagilov, Z.R. et al. Optical spectroscopic studies of CuCr2O4/γ-Al2O3. Catalyst deactivation under operation in catalytic heat generators. React Kinet Catal Lett 28, 195–201 (1985). https://doi.org/10.1007/BF02116778

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  • DOI: https://doi.org/10.1007/BF02116778

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