It has been shown by XRD, thermal analysis and ekectron microscopy methods that upon precipitation of copper and magnesium hydroxocompounds solid substitution solutions based on Cu(OH)2and CuCO3Cu(OH)2are formed. Low temperature decomposition of these compounds leads to the formation of copper-magnesium oxides with a disordered structures whose anion framework has OH-and CO2-3ions along with O2-ions. The disordered structuire is caused by partial location of anions and cations at insertion sites. Hydrothermal conditions promote the formation of the structure with the face-centered cubic cell (fcc). The role of anionic admixtures in stabilization of Mg2+in low temperature copper oxides has been explained. © 1991.
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