Model for Continual Depolymerization of Biomass Catalyzed by Dilute Sulfuric Acid
Model for Continual Depolymerization of Biomass Catalyzed by Dilute Sulfuric Acid
复制标题
稀硫酸催化生物质连续解聚模型
DOI：
10.1002/ceat.200800463
复制
发表时间：
2009-04-01
影响因子：
2.1
通讯作者：
Yan, Yongjie
中科院分区：
文献类型：
--
作者：
Qi, Wei;Zhang, Suping;Yan, Yongjie
传统上，生物质乙醇燃料是通过酸催化水解生物质来生产的。本文认为纤维素的聚合度是随机分布的，纤维素酸水解过程中β-1，4-糖苷键的断裂是一个连续解聚的过程。从这一观点出发，建立了酸催化纤维素连续解聚的模型。同时，通过模拟计算得到了β-1，4-糖苷键断裂的活化能和反应速率常数。所建立的模型是高度验证的测试运行，因此假设作为一个模型，可以用来描述纤维素酸水解的解聚路线。β-1，4-糖苷键断裂的活化能和速率常数符合纤维素酸水解的规律。该模型的研究对进一步研究纤维素水解机理具有重要意义。
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.