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(3): 357-361. shu

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

WU Xiao-min ^1,2 ,
KANG Min ^1,2 ,
LI Lei ¹ ,
ZHAO Ning ^1,, ,
WEI Wei ³ ,
SUN Yu-han ^1,4 ,
ZHANG Bing-sheng ⁵

1.
1. State Key Laboratory of Coal Conversion, Institute of Coal Chemistry, Chinese Academy of Sciences, Taiyuan 030001, China;

Corresponding author: ZHAO Ning,
Received Date: 18 October 2013
Available Online: 21 December 2013
Fund Project:

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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