Effect of calcination temperature of starch-modified silica on the performance of silica supported Cu catalyst in methanol conversion

GU Chuan-tao; LI Guang-jun; HU Yun-qing; QING Shao-jun; HOU Xiao-ning; GAO Zhi-xian

Volume 40 Issue 11

Nov. 2012

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Article Navigation > Journal of Fuel Chemistry and Technology > 2012 > 40(11): 1328-1335

GU Chuan-tao, LI Guang-jun, HU Yun-qing, QING Shao-jun, HOU Xiao-ning, GAO Zhi-xian. Effect of calcination temperature of starch-modified silica on the performance of silica supported Cu catalyst in methanol conversion[J]. Journal of Fuel Chemistry and Technology, 2012, 40(11): 1328-1335.

Citation:

GU Chuan-tao, LI Guang-jun, HU Yun-qing, QING Shao-jun, HOU Xiao-ning, GAO Zhi-xian. Effect of calcination temperature of starch-modified silica on the performance of silica supported Cu catalyst in methanol conversion[J]. Journal of Fuel Chemistry and Technology, 2012, 40(11): 1328-1335.

Citation:

GU Chuan-tao, LI Guang-jun, HU Yun-qing, QING Shao-jun, HOU Xiao-ning, GAO Zhi-xian. Effect of calcination temperature of starch-modified silica on the performance of silica supported Cu catalyst in methanol conversion[J]. Journal of Fuel Chemistry and Technology, 2012, 40(11): 1328-1335.

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Effect of calcination temperature of starch-modified silica on the performance of silica supported Cu catalyst in methanol conversion

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
Graduate University of Chinese Academy of Sciences, Beijing 100049, China

Received Date: 2012-02-08
Rev Recd Date: 2012-04-16
Publish Date: 2012-11-30

Abstract

Abstract

A series of starch-modified SiO₂ (SSi-T) were obtained by calcining the extrudate of SiO₂ and starch at different temperatures (T) and used as the support to prepare Cu catalysts (Cu/SSi-T, 10%) by the impregnation method. The Cu catalysts were characterized by N₂ sorption, FT-IR, TG, XRD, SEM and H₂-TPR; their catalytic performance in methanol conversion was investigated in a fixed bed reactor. The results indicated that starch can reduce the removal rate of silanol groups (Si-OH) from the surface of the support during calcination and the surface silanol groups are beneficial to the dispersion of Cu species. The calcination temperature of starch-modified SiO₂ exhibits a significant influence on the surface silanol (Si-OH) concentration, the surface area and porous structure of the support; as a result, it may be used to adjust the size of supported CuO crystal grains and dispersion of Cu species, which determine the performance of the silica supported Cu catalysts in methanol conversion.
- silica,
- starch-modification,
- Cu-based catalyst,
- calcination temperature,
- methanol conversion,
- methyl formate

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References(26)

References

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