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Effect of TiO 2 loading
on the activity of V/TiO 2 -Al 2 O 3 in the catalytic oxidehydrogenation of
ethylbenzene with carbon dioxide |
| Xiaohong LI,Wenying LI, |
| Key Laboratory of Coal
Science and Technology for MOE and Shanxi Province, Taiyuan University
of Technology, Taiyuan 030024, China; |
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Abstract TiO2-Al2O3 mixed oxides with different compositions ranging from 40wt-% to 95wt-% of TiO2 were prepared by sol-gel method and impregnated with different amounts of VOx. Supports and catalysts were characterized by X-ray diffraction (XRD), physisorption, temperature preprogrammed reduction (H2-TPR), and ammonia temperature programmed desorption (NH3-TPD). TiO2 content in the support had obvious effect on the crystal structure, texture characteristic, acid property, and catalytic activity in dehydrogenation of ethylbenzene (EB) with carbon dioxide. The highest catalytic activity was acquired when the TiO2 content was 50 wt-%.
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Issue Date: 05 June 2010
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