Thermochemical reactivity of delafossite-type AgNi0.5Ti0.5O2 and CuNi0.5Ti0.5O2 in O2 and H2

In the layered structure of delafossite-type metal oxides ABO2, the B position can be occupied by a wide spectrum of trivalent or couples of divalent/tetravalent cations. In the A position, however, only monovalent, linearly coordinated cations are accommodated. This study focuses on the thermochemi...

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Bibliographic Details
Published inSolid state ionics Vol. 63-65; pp. 274 - 280
Main Authors Sturzenegger, M., Oswald, H.R., Reller, A.
Format Journal Article
LanguageEnglish
Published Elsevier B.V 01.09.1993
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Summary:In the layered structure of delafossite-type metal oxides ABO2, the B position can be occupied by a wide spectrum of trivalent or couples of divalent/tetravalent cations. In the A position, however, only monovalent, linearly coordinated cations are accommodated. This study focuses on the thermochemical reactivity of AgNi0.5Ti0.5O2 and CuNi0.5Ti0.5O2 in O2 and H2. The influence of the A cation, i.e. Ag or Cu, on the course of thermally induced processes as well as on the product formation has been investigated by means of thermal analysis, mass spectrometry and X-ray diffraction. In dependence of the atmosphere, a variety of different solid products can be generated under well controlled conditions.
ISSN:0167-2738
DOI:10.1016/0167-2738(93)90116-K