Glucose production from hydrolysis of cellulose over a novel silica catalyst under hydrothermal conditions

作     者：Huayu Wang Changbin Zhang Hong He Lian Wang 

作者机构：State Key Laboratory of Environmental Chemistry and EcotoxicologyResearch Center for Eco-Environmental SciencesChinese Academy of SciencesBeijing 100085China 

出 版 物：《Journal of Environmental Sciences》 (环境科学学报（英文版）)

年 卷 期：2012年第24卷第3期

页      面：473-478页

核心收录：

学科分类：082903[工学-林产化学加工工程] 08[工学] 0829[工学-林业工程] 0822[工学-轻工技术与工程] 082202[工学-制糖工程] 

基　　金：supported by the National Natural Science Found for Creative Research Groups of China (No.50921604) 

主　　题：cellulose glucose silica catalyst hydrolysis hydrothermal biomass 

摘      要：A novel silica catalyst was synthesized by evaporation-induced self-assembly （EISA） method and tested for the catalytic selective hydrolysis of cellulose to glucose. This silica catalyst exhibited a higher catalytic activity than other oxides prepared by the same method, such as ZrO2, TiO2, and Al2O3. Using silica as a catalyst, cellulose was selectively hydrolyzed into glucose with a glucose yield as high as 50% under hydrothermal conditions without hydrogen gas. The silica catalyst was characterized by Brunauer-Emmett-Teller （BET）, X-ray diffraction （XRD） and transmission electron microscopy （TEM）. The results of temperature-programmed desorption of ammonia （NH3-TPD） and textural properties indicated that the synergistic effect between strong acidity and a suitable pore diameter of the silica catalyst may be responsible for its high activity. In addition, the catalyst was recyclable and showed excellent stability during the recycle catalytic runs.