Kinetics of Glucose Ethanolysis Catalyzed by Extremely Low Sulfuric Acid in Ethanol Medium  

乙醇中超低酸催化葡萄糖醇解反应动力学(英文)

作　　者：朱伟娜 常春 马晨 杜风光 

机构地区：[1]School of Chemical Engineering and Energy,Zhengzhou University [2]Shanghai Jiao Tong University Library [3]Shanghai Jiao Tong University [4]State Key Laboratory of Motor Vehicle Biofuel Technology

出　　处：《Chinese Journal of Chemical Engineering》2014年第2期238-242,共5页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China(21176227);the State Key Laboratory of Motor Vehicle Biofuel Technology(2013011)

摘　　要：The kinetics for production of ethyl levulinate from glucose in ethanol medium was investigated. The experiments were performed in various temperatures （433-473 K） and initial glucose concentrations （0.056-0.168 mol·L-1） with extremely low sulfuric acid as the catalyst. The results show that higher temperature can improve the conversion of glucose to ethyl levulinate, with higher yield of ethyl levulinate （44.79%, by mole） obtained at 473 K for 210 min. The kinetics follows a simplified first-order kinetic model. For the main and side reactions, the values of activation energy are 122.64 and 70.97 kJ·mo1-1, and the reaction orders are 0.985 and 0.998, respectively.The kinetics for production of ethyl levulinate from glucose in ethanol medium was investigated.The experiments were performed in various temperatures(433-473 K)and initial glucose concentrations(0.056-0.168mol·L?1)with extremely low sulfuric acid as the catalyst.The results show that higher temperature can improve the conversion of glucose to ethyl levulinate,with higher yield of ethyl levulinate(44.79%,by mole)obtained at 473 K for 210 min.The kinetics follows a simplified first-order kinetic model.For the main and side reactions,the values of activation energy are 122.64 and 70.97 kJ·mol?1,and the reaction orders are 0.985 and 0.998,respectively.

关 键 词：ethyl levulinate GLUCOSE KINETICS biomass 

分 类 号：O643.1[理学—物理化学] TS221[理学—化学]