文献类型：期刊文献

中文题名：Degradation Kinetics of Xylose and Glucose in Hydrolysate Containing Dilute Sulfuric Acid

英文题名：Degradation kinetics of xylose and glucose in hydrolysate containing dilute sulfuric acid

作者：Qi, Wei[1]; Zhang, Su-Ping[1]; Xu, Qing-Li[1]; Ren, Zheng-Wei[1]; Yan, Yong-Jie[1]

机构：[1] Research Center for Biomass Energy, East China University of Science and Technology, Shanghai 200237, China

年份：2008

卷号：8

期号：6

起止页码：1132

中文期刊名：过程工程学报

外文期刊名：Guocheng Gongcheng Xuebao/The Chinese Journal of Process Engineering

收录：CSTPCD;;EI(收录号：20090611900174);Scopus;北大核心:【北大核心2004】；CSCD:【CSCD2011_2012】；

基金：Supported by National Natural Science Foundation of China (No.50506010)

语种：英文

中文关键词：降解动力学;木糖;葡萄糖;水解过程;稀硫酸

摘要：In preparation of fuel alcohol from biomass as feedstock, hydrolysis with dilute acid as catalyst is one way to produce fermentable saccharide, xylose and glucose. However, the acid is also the catalyst in degradation of xylose and glucose and the yield of sacchride is dependent on the kinetic behaviors of saccharide. The degradation kinetics of xylose and glucose in the hydrolysate was investigated under the conventional process conditions of hydrogen ion concentration from 0.05 to 0.2 mol/L and temperature from 150 to 200 ℃ . With a numerical calculation method, the kinetic parameters were estimated, and the activation energy of xylose and glucose in the degradation reaction was obtained. The kinetic equations correlating the effect of hydrogen ion concentration on the rate constants of degradation reaction were established. Comparison between the calculated results from the equations and experimental ones proved that the established kinetic model could satisfactorily predict the degradation behavior of xylose and glucose in the acidic hydrolysate.
In preparation of fuel alcohol from biomass as feedstock, hydrolysis with dilute acid as catalyst is one way to produce fermentable saccharide, xylose and glucose. However, the acid is also the catalyst in degradation of xylose and glucose and the yield of saccharide is dependent on the kinetic behaviors of saccharide. The degradation kinetics of xylose and glucose in the hydrolysate was investigated under the conventional process conditions of hydrogen ion concentration from 0.05 to 0.2 mol/L and temperature from 150 to 200°C. With a numerical calculation method, the kinetic parameters were estimated, and the activation energy of xylose and glucose in the degradation reaction was obtained. The kinetic equations correlating the effect of hydrogen ion concentration on the rate constants of degradation reaction were established. Comparison between the calculated results from the equations and experimental ones proved that the established kinetic model could satisfactorily predict the degradation behavior of xylose and glucose in the acidic hydrolysate.