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Energy Sources, Part A: Recovery, Utilization, and Environmental Effects Volume 34, 2012 - Issue 5
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Original Articles

Sorbitol Hydrogenolysis to Glycols over Carbon Nanofibers/Graphite-felt Composite-supported Ru Catalyst in a Trickle Bed Reactor

L. Zhao State Key Laboratory of Chemical Engineering, East China University of Science & Technology, Shanghai, P. R. China
,
J. Zhou State Key Laboratory of Chemical Engineering, East China University of Science & Technology, Shanghai, P. R. China
,
G. Yang State Key Laboratory of Chemical Engineering, East China University of Science & Technology, Shanghai, P. R. China
,
Y. Ji State Key Laboratory of Chemical Engineering, East China University of Science & Technology, Shanghai, P. R. China
,
M. Zhang State Key Laboratory of Chemical Engineering, East China University of Science & Technology, Shanghai, P. R. China
,
H. Chen State Key Laboratory of Chemical Engineering, East China University of Science & Technology, Shanghai, P. R. China
&
X. Zhou State Key Laboratory of Chemical Engineering, East China University of Science & Technology, Shanghai, P. R. China
 show all
Pages 430-438 | Received 08 Dec 2009, Accepted 12 Jan 2010, Published online: 19 Jan 2012
 
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Abstract

Carbon nanofibers were in-situ grown on graphite-felt, and then Ru was supported to synthesize Ru/CNFs/GF structured catalyst. The comparisons of pressure gradient and reaction results clearly indicated that the Ru/CNFs/GF structured catalyst was more proper than powdered Ru/CNFs catalyst for sorbitol hydrogenolysis in a trickle bed reactor. For the structured catalyst, increasing the linear velocities would increase the sorbitol conversion, but only slightly change the glycols selectivity, which was due to the intensified mass transfer. Nevertheless, increasing the thickness of the carbon nanofibers layer would significantly decrease the glycols selectivity, which was due to the increased diffusion distance for hydrogen and glycols in the mesopores of the carbon nanofibers layer.

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