Studies on sepiolite supported Hydrotreating Catalysts
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Maity,S.K
Srinivas,B.N Prasad,V.V.D.N Singh,Anand Murali Dhar,G Rao,T.S.R Prasada |
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| Date |
2009-06-29T11:02:25Z
2009-06-29T11:02:25Z 2009-06-29T11:02:25Z |
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| Identifier |
Studies in Surface Science and catalysis Vol.113
http://hdl.handle.net/123456789/275 |
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| Description |
Sepio1ite is a hydrous mallnesium silicate, receiving considerable attention in catalysis
as support as well as catalyst. In this investigation a sepiolite was used as support for Mo03
and the sulfided form used for hyc!rodesulfurization and hydrogenation reaction using
thiophene and cyclohexene as model compounds respectively. The catalysts were
characterized by surface area measurement, X-ray diffraction, IR and temperature programmed
reduction methods. These results indicated that molybdenum is present as a monolayer upto 6
wt.% Mo loading and beyond this loading Mo03 crystallite growth is observed. The low
tcmperature oxygen chemisorption results indicated that there is no crystallite growth upto the
monolayer region and beyond this there is rapid growth of MoSZ crystallites. It was proposed
Ihal molybdenum interacts with basic hydroxyl groups attached to support. Linear correlations
passing through origin are obtained between catalytic activities for thiophene
hydrodesulfurization or cyclohexene hydrogenation and oxygen uptakes indicating that the
anion vacancies created on reductive sulfiding are the seat of catalytic activity. Since
correlations are obtained in the case of both HDS and HYD it is clear that oxygen
chemisorption is not specific to anyone of the functionalities but measures anion vacancies
which are related to the state of dispersion of molybdenum.
Keywords:' Sepiolice, Molybdenum Sulfide Oxygen Chemisorption, Hydordesuljuniation,
Hydrogenation
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| Language |
en_US
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| Subject |
Hydordesuljuniation
Molybdenum Sulfide Hydrogenation Oxygen Chemisorption |
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| Title |
Studies on sepiolite supported Hydrotreating Catalysts
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| Type |
Article
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