Influence of the crystalline structure of ZrO2 on the metallic properties of Pt in Pt/WO3-ZrO2 catalysts

The influence of the crystalline structure of ZrO2 on the metallic properties of Pt, when supported on WO3–ZrO2, was studied. Pt supported on tetragonal zirconia loses its metallic properties while when supported on monoclinic zirconia it presents good metallic activities. WO2,2- deposited on amorph...

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Bibliographic Details
Published inCatalysis letters Vol. 65; no. 4; pp. 205 - 208
Main Authors YORI, J. C, PARERA, J. M
Format Journal Article
LanguageEnglish
Published Dordrecht Springer 01.01.2000
Springer Nature B.V
Subjects
Amorphous materials
Catalysis
Catalysts: preparations and properties
Chemistry
Crystal structure
Crystallinity
Exact sciences and technology
General and physical chemistry
Isomerization
Metallic glasses
Properties (attributes)
Tetragonal zirconia
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
Tungsten oxides
Zirconium dioxide
Heterogeneous catalysis
Metal support interaction
Platinum
Isomerization
Tungsten Oxides
Transition metal
Property structure relationship
Zirconium Oxides
Supported catalyst
Crystalline structure
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Summary:The influence of the crystalline structure of ZrO2 on the metallic properties of Pt, when supported on WO3–ZrO2, was studied. Pt supported on tetragonal zirconia loses its metallic properties while when supported on monoclinic zirconia it presents good metallic activities. WO2,2- deposited on amorphous Zr(OH)4 before calcination generates an active material for n‐butane isomerization. The larger the fraction of the tetragonal phase of zirconia in this material, the higher the isomerization activity and the lower the metallic activity of Pt.
ISSN:1011-372X
1572-879X
DOI:10.1023/A:1019050228894