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《Journal of Xiamen University(Natural Science)》 2010-01
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Efficient Conversion of Cellobiose into Sorbitol over Ru/CNTs Catalyst

TAN Xue-song,DENG Wei-ping~*,ZHANG Qing-hong,WANG Ye~* (State Key Laboratory of Physical Chemistry of Solid Surfaces,National Engineering Laboratory for Green Chemical Productions of Alcohols,Ethers and Esters,College of Chemistry and Chemical Engineering,Xiamen University,Xiamen 361005,China)  
As a model reaction for cellulose transformation,the conversion of cellobiose was studied over supported metallicⅧand IB group elements catalysts,and Ru and Ir were found effective for the formation of sorbitol.Catalytic performances of catalysts on different supports including CNTs,AC,Al_2O_3,SiO_2,HY,CeO_2,MgO showed that CNTs is the most suitable support for metallic Ru species,and a superior performance obtained was 87%yield of sorbitol from the conversion of cellobiose over Ru/CNTs catalysts. The reaction route of cellobiose conversion was proposed.Firstly,cellobiose is transformed into 3-β-D-glucopyranosyl-D-glucitol by hydrogenation.Next,this 3-β-D-glucopyranosyl-D- glucitol was hydrolyzed to sorbitol and glucose which could be hydrogenated to sorbitol very quickly.However,the sorbtiol could also be converted by degradation or isomerization.
【Fund】: 国家自然科学基金(20625310 20773099 20873110);; 国家重点基础研究发展计划(2010CB732303 2005CB221408)
【CateGory Index】: O643.32
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