New complex-oxide materials Bi25.6Ba0.4Mo10–2yMe″2yO69–d: Synthesis and characteristics

• Published in: Russian journal of applied chemistry 2017-06, Vol.90 (6), p.853-861
• Main Authors: Mikhaylovskaya, Z. A., Buyanova, E. S., Petrova, S. A., Russkikh, O. V., Nikolaenko, I. V.
• Format: Article
• Language: English
• Subjects: Chemistry; Chemistry and Materials Science; Chemistry/Food Science; Industrial Chemistry/Chemical Engineering; Inorganic Synthesis and Industrial Inorganic Chemistry
• ISSN: 1070-4272; 1608-3296
• DOI: 10.1134/S1070427217060040

An integrated study was carried out of complex-oxide materials based substituted bismuth molybdate Bi 26 Mo 10 O 69 , which exhibit such potentially valuable characteristics as oxygen-ion conductivity at medium temperatures and catalytic activity. Compounds with formula Bi 25.6 Ba 0.4 Mo 10–2 y Me'' 2 y O 69– 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 Bi 25.6 Ba 0.4 Mo 10–2 y Me'' 2 y O 69– 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 Bi 25.6 Ba 0.4 Mo 10–2 y Me'' 2 y O 69– d exceeds that of the matrix composition.