Low-temperature synthesis of supported hydrodesulfurization catalysts based on chevrel phases

A new method has been developed for the synthesis of finely dispersed, highly active, supported hydrodesulfurization catalysts based on Chevrel phases. It is hypothesized that the modification of MoS 2 with cobalt or nickel, which enhances the catalytic activity, and the same modification of Chevrel...

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Bibliographic Details
Published inKinetics and catalysis Vol. 50; no. 2; pp. 270 - 274
Main Authors Kochubey, D. I., Rogov, V. A., Babenko, V. P.
Format Journal Article
LanguageEnglish
Published Dordrecht SP MAIK Nauka/Interperiodica 01.03.2009
Subjects
Catalysis
Chemistry
Chemistry and Materials Science
Physical Chemistry
EXAFS Data
Thiophene
EXAFS Spectroscopy
Molybdenum
Hydrodesulfurization
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Summary:A new method has been developed for the synthesis of finely dispersed, highly active, supported hydrodesulfurization catalysts based on Chevrel phases. It is hypothesized that the modification of MoS 2 with cobalt or nickel, which enhances the catalytic activity, and the same modification of Chevrel-type systems are of the same nature. The modifiers act through electron density donation into the conduction band of the active component. The increase in catalytic activity is due to the decrease of the effective charge of the molybdenum ion. The catalysts undergo partial restructuring during the reaction.
ISSN:0023-1584
1608-3210
DOI:10.1134/S0023158409020189