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

doi:10.1016/S1004-9541(14)60049-5

Chin.J.Chem.Eng. ›› 2014, Vol. 22 ›› Issue (2): 238-242.DOI: 10.1016/S1004-9541(14)60049-5

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

ZHU Weina¹, CHANG Chun¹, MA Chen², DU Fengguang³

1 School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China;
2 Shanghai Jiao Tong University Library, Shanghai Jiao Tong University, Shanghai 200240, China;
3 State Key Laboratory of Motor Vehicle Biofuel Technology, Nanyang 473000, China

Received:2013-04-08 Revised:2013-08-24 Online:2014-01-28 Published:2014-02-05
Contact: CHANG Chun
Supported by:
Supported by the National Natural Science Foundation of China (21176227) and the State Key Laboratory of Motor Vehicle Biofuel Technology (2013011).

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

朱伟娜¹, 常春¹, 马晨², 杜风光³

1 School of Chemical Engineering and Energy, Zhengzhou University, Zhengzhou 450001, China;
2 Shanghai Jiao Tong University Library, Shanghai Jiao Tong University, Shanghai 200240, China;
3 State Key Laboratory of Motor Vehicle Biofuel Technology, Nanyang 473000, China

通讯作者: CHANG Chun
基金资助:
Supported by the National Natural Science Foundation of China (21176227) and the State Key Laboratory of Motor Vehicle Biofuel Technology (2013011).

Abstract

Abstract: 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·mol^-1, and the reaction orders are 0.985 and 0.998, respectively.

Key words: ethyl levulinate, glucose, kinetics, biomass

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·mol^-1, and the reaction orders are 0.985 and 0.998, respectively.

关键词: ethyl levulinate, glucose, kinetics, biomass

ZHU Weina, CHANG Chun, MA Chen, DU Fengguang. Kinetics of Glucose Ethanolysis Catalyzed by Extremely Low Sulfuric Acid in Ethanol Medium[J]. Chin.J.Chem.Eng., 2014, 22(2): 238-242.

朱伟娜, 常春, 马晨, 杜风光. Kinetics of Glucose Ethanolysis Catalyzed by Extremely Low Sulfuric Acid in Ethanol Medium[J]. Chinese Journal of Chemical Engineering, 2014, 22(2): 238-242.

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

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

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