Magnetic and E.s.r. Spectroscopic Study of Nickel in Nickel-Tungsten Hydrocracking Catalysts
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Sivasankar, Subramanian
Ramaswamy, Arumugamangalam V Vishnoi, Savita Ratnasamy, Paul |
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| Date |
2010-05-11T09:55:10Z
2010-05-11T09:55:10Z 2010-05-11T09:55:10Z |
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| Identifier |
J. appl. Chern. Biotechnol. 1978, 28, 387-395
http://hdl.handle.net/123456789/506 |
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| Description |
Magnetic susceptibility and e.s.r. spectroscopic techniques have been used to study
the formation and concentration of metallic nickel in three commercial hydrocracking
catalysts consisting of oxides of nickel and tungsten supported on alumina, silicaalumina
and boria-alumina. In a hydrogen atmosphere, the influence of cetane and
benzene, with and without added thiophene or CS2, on the oxidation state of nickel was
investigated. In the absence of sulphur, nickel is present mostly in the metallic state
during the hydrogenation of benzene or the hydrocracking of cetane. When CS2 is
present in the feed, it destroys the ferromagnetic nickel. Metallic nickel is, however,
still present during the above two reactions even in the presence of thiophene. The
underlying support is seen to exert a significant influence on the ease of formation of
metallic nickel.
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| Language |
en_US
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| Subject |
Hydrocracking Catalysts
Magnetic Susceptibility E.S.R spectroscopic |
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| Title |
Magnetic and E.s.r. Spectroscopic Study of Nickel in Nickel-Tungsten Hydrocracking Catalysts
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| Type |
Article
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