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Trends in Physical Chemistry   Volumes    Volume 4 
Abstract
In situ laser Raman studies of supported oxometallates in their oxidic, reduced and sulphided states
E. Payen, S. Kasztelan
Pages: 363 - 384
Number of pages: 22
Trends in Physical Chemistry
Volume 4 

Copyright © 1994 Research Trends. All rights reserved

ABSTRACT
 
Supported transition metals in their oxide, reduced or sulphided states are used as catalysts in a large variety of industrial processes. One of the spectroscopic technique employed in the recent years to characterize such catalytic materials is laser Raman spectroscopy. In this work it is shown that laser Raman spectroscopy can be successfully employed to gain information on the molecular structure, the nature of the bonding with the support and the nature of the coordinative and ligand heterogeneity of the transition metal center during preparation, activation and regeneration. Examples are given for the different states of molybdenum and tungsten based oxometallate catalysts.
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