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The reactions of the oxides Cu2O and CuO with potassium monoxide and liquid potassium

Authors
Journal
Journal of the Less Common Metals
0022-5088
Publisher
Elsevier
Publication Date
Volume
64
Issue
1
Identifiers
DOI: 10.1016/0022-5088(79)90140-1

Abstract

Abstract The ternary oxides KCuO and K 4CuO 3 have been observed as products in the solid state reactions of potassium oxide with the oxides Cu 2O and CuO under argon and in vacuum. The compound K 4CuO 3 has been isolated as a single phase and its X-ray powder diffraction pattern has been obtained. Both Cu 2O and CuO are reduced by liquid potassium to copper metal, with the formation of the ternary oxides KCuO and K 4CuO 3. Thermal analysis showed that Cu 2O reacts with liquid potassium at 185 °C and that CuO undergoes the same reaction at 70 °C.

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