Abstract
Mixed oxides of copper and zinc were prepared by thermal decomposition of the coprecipitates obtained from mixed metal nitrate solutions by addition of ammonium bicarbonate (series AB n and hydroxide (series AM n. These were characterised by diffuse reflectance spectroscopy and electron spinesonance spectroscopy. It was found that in series ABn appreciable dissolution of Cu 2+ ions in the zinc oxide matrix had occurred and in this solid solution the Cu 2+ ions occupied distorted octahedral sites. In the case of series AM n, part of the Zn 2+ was dissolved in the copper oxide matrix causing an increase in the reduction temperature of the copper oxide.
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