Electrical and catalytic properties of some oxides with the fluorite or pyrochlore structure: Part 1: Synthesis, characterization and conductivity

M.P. van Dijk, J.H.H. ter Maat, G. Roelofs, H. Bosch, G.M.H. van de Velde, P.J. Gellings, A.J. Burggraaf

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Abstract

In view of their possible use as electrocatalysts, several oxides with the fluorite or pyrochlore structure were investigated. Part I of this paper deals with the synthesis, characterization and electrical conductivity of these materials. All lanthanide titanates investigated (partly doped with Bi) show the pyrochlore structure and are poor conductors, except for the compounds containing Tb. For Nd-zirconates, partly substituted with Ce, the degree of order depends on the amount of Ce and temperature treatment. Ionic and in some cases mixed conductivity was observed. Part II reports about the catalytic activity for CO oxidation.
Original languageEnglish
Pages (from-to)1149-1156
JournalMaterials research bulletin
Volume19
Issue number9
DOIs
Publication statusPublished - 1984

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