ISSN:
1572-879X
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract The influence of the sulfidation temperature of dehydrated ion exchanged CoNaY on the catalytic activity and structure was studied by thiophene HDS activity measurements, overall sulfur analysis, temperature programmed sulfidation, Xe adsorption measurements in combination with129Xe NMR, EXAFS and ESR. It was shown that up to a sulfidation temperature of 573 K small highly active Co sulfide clusters were formed in the supercages. Sulfidation above 573 K led to decomposition of these Co sulfide particles by a protolysis reaction resulting in the formation of H2Sand a blue colored Co compound having almost no HDS activity.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1023/A:1019092602157
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