Effect of Al-SBA-15 Support on Catalytic Functionalities of Hydrotreating Catalysts. II. Effect of Variation of Molybdenum and Promoter Contents on Catalytic Functionalities
IR@IIP: CSIR-Indian Institute of Petroleum, Dehradun
View Archive Info| Field | Value | |
| Creator |
Kumaran, G. Muthu
Garg, Shelu Soni, Kapil Manoj, Kumar Sharma, L.D Rao, K. S .Rama Dhar, G. Murali |
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| Date |
2010-07-26T05:56:58Z
2010-07-26T05:56:58Z 2010-07-26T05:56:58Z |
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| Identifier |
Ind. Eng. Chem. Res. 2007, 46, 4747-4754
http://hdl.handle.net/123456789/721 |
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| Description |
High surface area, ordered mesoporous SBA-15 and Al-SBA-15 were synthesized using published procedures
and used as support for Mo and W catalysts promoted with Co and Ni. The molybdenum loading was varied
on Al-SBA-15 from 2 to 12 wt %, and Co or Ni loading was varied on 8%Mo/Al-SBA-15 from 1 to 5 wt %.
The support and catalysts were characterized by X-ray diffraction (XRD), Barett-Joyner-Halenda (BJH)
pore-size distribution, Brunauer-Emmett-Teller (BET) surface area, Fourier transform infrared (FT-IR),
temperature-programmed reduction (TPR), and oxygen chemisorption. The characterization results indicated
that hexagonal mesoporous structure is retained on Mo, CoMo, and NiMo catalysts. The TPR studies indicated
that there are significant differences in Mo reducibilities and reducible species that are present on SBA-15
and Al-SBA-15 supported catalysts. The catalytic activities for thiophene, hydrodesulfurization (HDS), and
cyclohexene hydrogenation (HYD) were carried out as a function of Mo and CoMo or NiMo loadings at
400 °C on sulfided catalysts. The results indicated that the molybdenum is dispersed well up to 8% Mo
loading and 8 wt % loading is optimum for catalytic activities. Oxygen chemisorption correlated well with
catalytic activity. The reducibilities of the catalysts and their relation to catalytic activities are discussed. A
comparison of the physicochemical properties and catalytic activities of Mo and W catalysts supported on
SBA-15 and Al-SBA-15 is made.
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| Language |
en_US
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| Subject |
Catalytic Funtionalities
Hydrotreating Catalysts Molybdenum Promoter |
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| Title |
Effect of Al-SBA-15 Support on Catalytic Functionalities of Hydrotreating Catalysts. II. Effect of Variation of Molybdenum and Promoter Contents on Catalytic Functionalities
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| Type |
Article
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