Abstract
An integrated study was carried out of complex-oxide materials based substituted bismuth molybdate Bi26Mo10O69, which exhibit such potentially valuable characteristics as oxygen-ion conductivity at medium temperatures and catalytic activity. Compounds with formula Bi25.6Ba0.4Mo10–2yMe'' 2yO69–d were synthesized by the standard ceramic technology and characterized by the methods of X-ray phase analysis, scanning electron microscopy, and laser light scattering. The morphological characteristics of the ceramic based on Bi25.6Ba0.4Mo10–2yMe'' 2yO69–d were examined; the catalytic characteristics of granulated powders were studied for the example of ethylene oxidation; the method of impedance spectroscopy was employed to examine the temperature dependence of the electrical conductivity of the samples; it was shown that the conductivity of Bi25.6Ba0.4Mo10–2yMe'' 2yO69–d exceeds that of the matrix composition.
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