Effects of iron, bismuth, and vanadium oxides on the properties of cordierite ceramics

The effects of iron oxide (10%), bismuth oxide (2.2%), and vanadium oxide (1.6%) admixtures on the physicochemical properties of cordierite ceramics are reported, including the phase composition, surface features, porous structure, and activity in ammonia oxidation. The formation of the cordierite p...

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Bibliographic Details
Published inKinetics and catalysis Vol. 51; no. 1; pp. 131 - 134
Main Authors Sutormina, E. F., Isupova, L. A., Kulikovskaya, N. A., Plyasova, L. M., Rudina, N. A.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.02.2010
Subjects
Catalysis
Chemistry
Chemistry and Materials Science
Conference
Physical Chemistry
Total Pore Volume
Cordierite
Nitrogen Oxide
Vanadium Oxide
Ammonia Oxidation
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Summary:The effects of iron oxide (10%), bismuth oxide (2.2%), and vanadium oxide (1.6%) admixtures on the physicochemical properties of cordierite ceramics are reported, including the phase composition, surface features, porous structure, and activity in ammonia oxidation. The formation of the cordierite phase is favored by introducing the oxide modifiers, by raising the heat treatment temperature, and by extending the heating time. The introduction of V 2 O 5 affords well-crystallized cordierite with a small specific surface area and a large proportion of macropores. The oxide modifiers markedly enhance the ammonia oxidation activity and nitrogen oxide selectivity of the cordierite ceramics.
ISSN:0023-1584
1608-3210
DOI:10.1134/S0023158410010210