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In Situ Investigations of Structureactivity correlations of Mixed Molybdenum Oxide Catalysts
Author(s) -
Rödel E.,
Jentoft R.E.,
Ressler T.
Publication year - 2004
Publication title -
zeitschrift für anorganische und allgemeine chemie
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.354
H-Index - 66
eISSN - 1521-3749
pISSN - 0044-2313
DOI - 10.1002/zaac.200470125
Subject(s) - physics , planck , humanities , chemistry , philosophy , astrophysics
Molybdenum oxide based catalysts promoted with other transition metals are active for the selective oxidation of propene in the presence of gas phase oxygen at temperatures above ~ 600 K. Crystalline (Mo,V,W)5O14 constitutes a three-dimensional model system for the more complex molybdenum based mixed oxide catalysts that are employed industrially for various partial oxidation reactions. In the mixed oxide system little is known about the cooperation of the different metal centers and their role for the stabilization of the active phase [1,2,3]. Here we report in situ X-ray absorption spectroscopy (XAS) and in situ X-ray diffraction (XRD) studies on the structural evolution of a precursor for bulk (MoVW)5O14 during calcination and under propene oxidation conditions