Preparation of V/ZrO2 catalysts by the sol-gel method : physical and structural characterization

Zirconia-supported vanadium oxides were prepared by the sol-gel method and characterised by different techniques. The vanadium content exerts an effect on the area and pore-size of the precursors and samples calcined. The presence of vanadium also affects the decomposition of the precursors into ZrO...

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Published in:Journal of materials science 1996, Vol.31 (2), p.437-444
Main Authors: ROJAS-CERVANTES, M. L, LOPEZ-PEINADO, A. J, DE D. LOPEZ-GONZALEZ, J, CARRASCO-MARIN, F
Format: Article
Language:English
Subjects:
Catalysis
Catalysts: preparations and properties
Chemistry
Exact sciences and technology
General and physical chemistry
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
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description Zirconia-supported vanadium oxides were prepared by the sol-gel method and characterised by different techniques. The vanadium content exerts an effect on the area and pore-size of the precursors and samples calcined. The presence of vanadium also affects the decomposition of the precursors into ZrO2 and its phase transformation, as well as the formation of fibres, as shown by SEM-EDX. XPS analyses show the presence of two species of vanadium at the surface, V5+ and V4+, the percentage of each one depending on the load of vanadium in the catalyst. 20 refs.
doi_str_mv 10.1007/BF01139162
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subjects Catalysis
Catalysts: preparations and properties
Chemistry
Exact sciences and technology
General and physical chemistry
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
title Preparation of V/ZrO2 catalysts by the sol-gel method : physical and structural characterization
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