文献类型：期刊文献

英文题名：Model for Continual Depolymerization of Biomass Catalyzed by Dilute Sulfuric Acid

作者：Qi, Wei[1];Zhang, Suping[1];Xu, Qingli[1];Li, Hongyu[1];Ren, Zhengwei[1];Li, Tingchen[1];Yan, Yongjie[1]

机构：[1]E China Univ Sci & Technol, Res Ctr Biomass Energy, Shanghai 200237, Peoples R China

年份：2009

卷号：32

期号：4

起止页码：534

外文期刊名：CHEMICAL ENGINEERING & TECHNOLOGY

收录：;EI(收录号：20092112091673);WOS:【SCI-EXPANDED(收录号:WOS:000265119600003)】；

基金：The authors are grateful to the National Natural Science Foundation of China (No. 50506010) for providing funds for this research. And I must give my sincere thanks to Prof. Yongjie Yan, Prof. Suping Zhang, Prof. Tingchen Li, Prof. Zhengwei Ren and many friends who helped me.

语种：英文

外文关键词：Acidic hydrolysis; Biomass; Cellulose; Depolymerization model

摘要：Ethanol fuel from biomass is conventionally produced via the hydrolysis of biomass catalyzed by acid. In this paper, it is understood that the degree of polymerization of cellulose is randomly distributed and that the rupture of beta-1,4-glucosidic bonds during acidic hydrolysis of cellulose is a process of continual depolymerization. From this perception, a model is established for the continual depolymerization of cellulose catalyzed by acid. Meanwhile, analog computation resulted in the activation energy and the reaction rate constant related to the rupture of beta-1,4-glucosidic bonds. The established model is highly validated by test runs and thus assumed as a model that can be used to describe the depolymerization route taken in acidic hydrolysis of cellulose. The calculated activation energy and rate constant for the rupture of beta-1,4-glucosidic bonds correspond to the rule of acidic hydrolysis of cellulose. Investigation of the model is of great significance in further studies on the hydrolysis mechanism of cellulose.