<em>In-situ</em> IR study of thermal decomposition of dimethyl carbonate over Zn/Al mixed oxide catalysts

WU Xiao-min; KANG Min; LI Lei; ZHAO Ning; WEI Wei; SUN Yu-han; ZHANG Bing-sheng

Volume 42 Issue 03

Mar. 2014

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Article Navigation > Journal of Fuel Chemistry and Technology > 2014 > 42(03): 357-361

WU Xiao-min, KANG Min, LI Lei, ZHAO Ning, WEI Wei, SUN Yu-han, ZHANG Bing-sheng. In-situ IR study of thermal decomposition of dimethyl carbonate over Zn/Al mixed oxide catalysts[J]. Journal of Fuel Chemistry and Technology, 2014, 42(03): 357-361.

Citation:

WU Xiao-min, KANG Min, LI Lei, ZHAO Ning, WEI Wei, SUN Yu-han, ZHANG Bing-sheng. In-situ IR study of thermal decomposition of dimethyl carbonate over Zn/Al mixed oxide catalysts[J]. Journal of Fuel Chemistry and Technology, 2014, 42(03): 357-361.

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In-situ IR study of thermal decomposition of dimethyl carbonate over Zn/Al mixed oxide catalysts

1.
State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;
2.
University of Chinese Academy of Sciences, Beijing 100049, China;
3.
Center for Greenhouse Gas and Environmental Engineering, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, China;
4.
Low Carbon Conversion Center, Shanghai Advanced Research Institute, Chinese Academy of Sciences, Shanghai 201203, China;
5.
Shandong ACID Chemicals Co., LTD, Feicheng 271600, China

Received Date: 2013-10-18
Rev Recd Date: 2013-12-21
Publish Date: 2014-03-31

Abstract

Abstract

ZnO, ZnAl₂O₄ and Zn/Al mixed oxide catalysts were prepared by thermal decomposition of hydrotalcite-like layered precursors derived from urea precipitation at 1 073 K. Both ZnAl₂O₄and ZnO phases were observed in ZAO-3 catalyst at 1 073 K from XRD patterns. The NH₃-TPD and CO₂-TPD results revealed that the acidity and basicity of Zn/Al mixed oxide catalysts changed with the introduction of Al. Combined with the in-situ FT-IR results of dimethyl carbonate (DMC) decomposition over ZAO-3(1 073 K), ZnAl₂O₄, ZnO at various temperatures, it was found that the synergistic effect between acidic and basic sites over ZAO-3(1 073 K) could stabilize DMC molecules and inhibit the decomposition of DMC.
- dimethyl carbonate,
- Zn/Al mixed oxide,
- thermal decomposition,
- in-situ FT-IR

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References(9)

References

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