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Citation: XU Sankui, WANG Xiaodong, LI Limin, XU Qun, LI Rui. Effect of Supercritical Methanol Treatment on the Surface Property of Activated Carbon and the Activity of Ru/Activated Carbon Catalyst[J]. Chinese Journal of Applied Chemistry, ;2011, 28(8): 936-941. doi: 10.3724/SP.J.1095.2011.00552 shu

Effect of Supercritical Methanol Treatment on the Surface Property of Activated Carbon and the Activity of Ru/Activated Carbon Catalyst

XU Sankui ^a,b ,
WANG Xiaodong ^a ,
LI Limin ^a,, ,
XU Qun ^c ,
LI Rui ^a

1.
a Department of Chemistry, Zhengzhou University, Zhengzhou 450052;
2.
b College of Material Engineering, Henan University of Technology, Zhengzhou;
3.
c College of Material Engineering, Zhengzhou University, Zhengzhou 450052

Corresponding author: LI Limin,
Received Date: 20 September 2010
Available Online: 10 December 2010
Fund Project: 河南省教育厅基金资助项目(2010A150008) (2010A150008)

Activated carbon(AC) was modified by supercritical fluidic methanol in order to obtain materials with different surface properties.Several techniques were used to characterize the activated carbon and Ru/AC catalysts including N₂ physisorption,Boehm titration,XPS and temperature-programmed reduction(TPR).The results show that supercritical fluid treatment does not remarkably change the surface structure of activated carbon,but significantly reduce the amount of the surface acidic groups.Thus Ru deposited on them will assemble.These led to a higher dispersion of Ru and enhanced the activity of the catalysts prepared by impregnation of AC supported with RuCl₃ solution.The activities of Ru/AC catalysts for hydrogenation of glucose were tested under 4.0 MPa and 120℃.The results show that activities of Ru/AC catalysts prepared by supercritical fluid treatment are increased,and the highest reaction rate(in Ru mass unit) for hydrogenation of glucose reaches 118.65 mmol/(min·g),which was 1.96 times higher than that without treatment.
- supercritical fluid,
- activated carbon,
- ruthenium catalyst,
- surface group,
- glucose hydrogenation
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