On the Reactions Occurring in the CaOCr2O3O2 system

F. Solymosi, IréN Nagy

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The reactions occurring in the system CaOCr2O3O2 have been investigated. In the mixture of two oxides heated in air to higher temperature calcium chromate and chromite are being formed. The rate and the ratio of the two reactions is very sensitive to the composition of gaseous atmosphere, especially to the partial pressure of oxygen. The formation of spinel was accelerated by a small amount of oxygen but was partly or fully suppressed at a higher oxygen pressure on the expense of chromate formation. The oxidation of CaOCr2O3 was also studied kinetically. Detailed measurements in different gaseous atmospheres were performed with doped CaO and Cr2O3. The results were interpreted in the light of the defect structure of the reacting oxides.

Original languageEnglish
Pages (from-to)217-224
Number of pages8
JournalZAAC ‐ Journal of Inorganic and General Chemistry
Issue number2
Publication statusPublished - 1970


ASJC Scopus subject areas

  • Inorganic Chemistry

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