Abstract
DTA and XRD methods used to examine the Cr2O3–α-Sb2O4–MoO3 system have shown that a substitution solid solution of MoO3 in CrSbO4 is formed. A study of all the theoretically possible solid solution models has pointed to the fact that Mo6+ ions are incorporated into the CrSbO4 crystal lattice, in the place of Sb5+ ions and the compensation of redundant charges takes place through cation vacancies arising in an Sb5+ sub-lattice. The solubility limit for MoO3 in CrSbO4 does not exceed 25.00 mol%. CrSbO4(s.s.) is stable to ~1320°C.
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