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ESR and DRES study of the state of cobalt, nickel, and copper in oxide catalysts obtained from activated aluminum alloys

  • Physical Chemistry
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Bulletin of the Russian Academy of Sciences, Division of chemical science Aims and scope

Abstract

ESR and DRES were used to study the state of the cobalt, nickel, and copper ions in catalysts obtained by dissolving cobalt-, nickel-, and/or copper-containing activated aluminum alloys in water with subsequent roasting or impregnation of the support obtained by dissolving activated aluminum in water and solutions of Co, Ni, or Cu nitrates. The formation of highly dispersed M0 aggregates, which are rather readily oxidized, is characteristic before heat treatment for Co-and Ni-containing catalysts obtained from the alloys. In the case of Cu-containing systems, several types of copper ions are observed independently of the method of synthesis even before heat treatment. Heat treatment leads to the aggregation of oxidized Co2+ ions to give highly dispersed oxide phases. The roasted nickel and copper catalysts contain several types of nickel and copper ions, respectively.

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Authors
  1. M. A. Ismailov
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  2. R. B. Akhverdiev
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  3. É. G. Ismailov
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  4. V. S. Gadzhi-Kasumov
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  5. V. I. Yakerson
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  6. R. G. Sarmurzina
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Additional information

N. D. Zelinskii Institute of Organic Chemistry, Russian Academy of Sciences, 117913 Moscow. Translated from Izvestiya Akademii Nauk, Seriya Khimicheskaya, No. 9, pp. 1987–1992, September, 1992.

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Ismailov, M.A., Akhverdiev, R.B., Ismailov, É.G. et al. ESR and DRES study of the state of cobalt, nickel, and copper in oxide catalysts obtained from activated aluminum alloys. Russ Chem Bull 41, 1543–1546 (1992). https://doi.org/10.1007/BF00863568

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  • DOI: https://doi.org/10.1007/BF00863568

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