New synthetic route in obtaining copper chromite I. Hydrolysis of some soluble salts

The possibility of obtaining copper chromite through thermal decomposition of some polynuclear coordination compounds, [Cr2Cu(NH3)2(OH)6](NO3)2 and [Cr2Cu(OH)8]·4H2O obtained through hydrolytic decomposition of chromium and copper soluble salts was considered. A decomposition mechanism of the pattern compounds is proposed. A pure tetragonal Cr2CuO4 with mean crystallite sizes varying in the range 133–210 Å was obtained between the temperature limits 823 K-1073 K.