Effects of TiO2 promoter on the catalytic performance of Ni/Al2O3 in CO methanation

ZHAN Ji-shan; GUO Cui-li; ZHANG Jun-tao; ZHANG Jin-li

Volume 40 Issue 05

May 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(05): 589-593

ZHAN Ji-shan, GUO Cui-li, ZHANG Jun-tao, ZHANG Jin-li. Effects of TiO2 promoter on the catalytic performance of Ni/Al2O3 in CO methanation[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 589-593.

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ZHAN Ji-shan, GUO Cui-li, ZHANG Jun-tao, ZHANG Jin-li. Effects of TiO₂ promoter on the catalytic performance of Ni/Al₂O₃ in CO methanation[J]. Journal of Fuel Chemistry and Technology, 2012, 40(05): 589-593.

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Effects of TiO₂ promoter on the catalytic performance of Ni/Al₂O₃ in CO methanation

School of Chemical Engineering and Technology, Tianjin University, Tianjin 300072, China

Funds: 国家自然科学基金(20876113)。

Received Date: 2011-07-11
Rev Recd Date: 2011-10-19
Publish Date: 2012-05-31

Abstract

Abstract

A series of TiO₂-Al₂O₃ composite supports with different TiO₂ contents were prepared by sol-gel method and then supported nickel catalysts (NiO/TiO₂-Al₂O₃) were obtained by impregnation with NiO/TiO₂-Al₂O₃ as the supports. The effects of TiO₂ promoter content and reaction temperature on the performance of TiO₂-Al₂O₃ catalysts in CO methanation were investigated. The results showed that the nickel catalyst supported on the TiO₂-Al₂O₃ composite containing 30% TiO₂ exhibits the highest activity for CO methanation under a temperature from 350 to 450 ℃. BET, XRD and H₂-TPR characterization results indicated that the addition of TiO₂ promoter can restrain the formation of Ni/Al₂O₄, improve the dispersion of NiO, avoid the formation of large NiO granules, and make NiO reduction easier, which can then enhance the activity of the nickel catalysts in CO methanation.
- CO methanation,
- TiO₂ promoter,
- Ni/Al₂O₃

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References(21)

References

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