Cumene cracking functionalities on sulfided Co(Ni)Mo/TiO2-SiO2 catalysts
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Rana,M.S
Maity,S.K Ancheyta,J Murali Dhar,G |
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| Date |
2010-07-20T09:32:04Z
2010-07-20T09:32:04Z 2010-07-20T09:32:04Z |
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| Identifier |
Applied Catalysis A: General 258 (2004) 215–225
http://hdl.handle.net/123456789/677 |
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| Description |
Cumene cracking reaction was carried out on pure support as well as sulfided Mo, CoMo, and NiMo catalysts in a plug flow micro-reactor
at 400 ◦C and atmospheric pressure. Catalytic activity was studied as a function of Mo content, promoter content (Co, Ni), and support
composition [Ti/(Ti + Si) = 0.0, 0.15, 0.30, 0.45, 0.70, 1.0]. Surface acid–base properties of pure supports were measured with 2-propanol
decomposition, showed that the supports were acidic in nature, the acidic character increases with increasing TiO2 content in SiO2. Techniques
used for characterization were BET specific surface area (SSA), pore volume, X-ray diffraction, CO2 chemisorption, and low temperature
oxygen chemisorption (LTOC). CO2 chemisorption on sulfided catalysts showed a strong decrease in the amount of CO2 adsorption as a
function of metal loading. The sulfided-supported catalysts exhibited better cracking activity in presence of hydrogen, which suggests that
sulfided molybdenum phases were responsible for cumene cracking activity. The LTOC and catalytic activity results showed similar trends
with variation of molybdenum content which indicated that the cracking activity of Mo and CoMo catalysts has significant contribution from
the supported phases. The cumene cracking activity over supported catalysts is attributed to the Brønsted (S–H) sites like sulfhydryl groups.
Variation of support composition strongly affects the catalytic cracking activity which decreases with increasing TiO2 content in SiO2.
© 2003 Elsevier B.V. All rights reserved.
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| Language |
en_US
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| Subject |
TiO2-SiO2 Support
CoMo Catalysts Oxygen Chemisorption Cracking Hydroprocessing |
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| Title |
Cumene cracking functionalities on sulfided Co(Ni)Mo/TiO2-SiO2 catalysts
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| Type |
Article
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