E.s.r. study of zeolites containing transition metals and their hydrodesulphurizing activity

The hydrodesulphurizing activity of type Y zeolites modified with cobalt, nickel, molybdenum, zinc and copper is studied towards the reaction hydrogenolysis of diethylsulphide. The state of the metal components in the oxidized, reduced and sulphided forms of molybdenum-, cobalt- and nickel-containin...

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Bibliographic Details
Published in:Zeolites 1986, Vol.6 (4), p.304-306
Main Authors: Davidora, N., Kovacheva, P., Shopov, D.
Format: Article
Language:English
Subjects:
Catalysis
Catalysts: preparations and properties
Catalytic reactions
Chemistry
E.s.r
Exact sciences and technology
General and physical chemistry
General. Nomenclature, chemical documentation, computer chemistry
Theory of reactions, general kinetics
Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry
type Y zeolites
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Summary:The hydrodesulphurizing activity of type Y zeolites modified with cobalt, nickel, molybdenum, zinc and copper is studied towards the reaction hydrogenolysis of diethylsulphide. The state of the metal components in the oxidized, reduced and sulphided forms of molybdenum-, cobalt- and nickel-containing zeolites is studied by means of e.s.r. spectroscopy. Sulphidation of the samples leads to a decrease in the Mo(V) content, to reduction of Co(II) and to an increase in dispersity of the metallic nickel phase. It is shown that efficient catalysts for hydrodesulphurization are obtained not only by the simultaneous use of cobalt and molybdenum as active components, but also by the separate use of cobalt or nickel.
ISSN:0144-2449
1873-3115
DOI:10.1016/0144-2449(86)90085-0