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Divalent chromium in reduced chromium oxide systems; determination of its amount and investigation of its properties

  • Physical Chemistry
  • Published:
Bulletin of the Academy of Sciences of the USSR, Division of chemical science Aims and scope

Conclusions

  1. 1.

    Reduction treatments of chromium oxide systems with different reducing agents produced surface atoms of Cr(II), whose number was determined by: the total number of chromium atoms on the surface, the chemical composition of the surface compounds being reduced, the reducing conditions (i.e., the optimum reduction temperature of H2 was 550°C at a gas feed rate of over 400 h−1). The maximum concentration of Cr(II) was independent of the nature of the reducing agent (H2, CO, CH4, C5H12).

  2. 2.

    The stability of Cr(II) atoms in reduced chromium oxide systems was significantly higher than was expected from thermodynamic calculations.

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Authors and Affiliations

  1. N. D. Zelinskii Organic Chemistry Institute, Academy of Sciences of the USSR, Moscow

    K. I. Slovetskaya, É. G. Aleshin & A. M. Rubinshtein

Authors
  1. K. I. Slovetskaya
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  2. É. G. Aleshin
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  3. A. M. Rubinshtein
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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 7, pp. 1501–1505, July, 1988.

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Slovetskaya, K.I., Aleshin, É.G. & Rubinshtein, A.M. Divalent chromium in reduced chromium oxide systems; determination of its amount and investigation of its properties. Russ Chem Bull 37, 1324–1328 (1988). https://doi.org/10.1007/BF00962731

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  • DOI: https://doi.org/10.1007/BF00962731

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