CLEAN CONVERSION TO FERMENTABLE GLUCOSE FORM CELLULOSE

摘要：

The process of conversion of microcrystalline cellulose to glucose was studied by CP/MAS 13C-NMR, X-ray and FTIR methods. The results indicated the formic acid solution could effectively penetrate into the interior cellulose and made the hydrolysis taking place not only in crystalline zone but in amorphous zone. The microcrystalline cellulose was hydrolyzed with formic acid with 4 ％ hydrochloric acid under mild conditions also was studied. The effects of concentration of hydrochloric acid, the ratio of solid and liquor, temperature (55 ℃-75℃) and retention time (0-9 h), the concentration of glucose were analyzed. The hydrolysis velocities of microcrystalline cellulose were 6.14×10-3 h-1 at 55℃, 2.94× 10-2 h-1 at 65 ℃, 6.84×10-2 at 75℃, The degradation velocities of glucose were 0.01 h-1 at 55℃, 0.14 h-1 at 65℃, 0.34 h-1 at 75 ℃. The activation energy of microcrystalline cellulose hydrolysis was 105.61 kJ/mol, the activation energy of glucose degradation was 131.37 kJ/mol.

关键词： CP-MAS 13C-NMR X-ray Microcrystalline cellulose Hydrolysis Kinetics

作者: Yong SUN Lu LIN Haibo DENG

作者单位: Department of Resources Science and Engineering,State Key Laboratory of Pulp and Paper Engineering,South China University of Technology,Guangzhou,510641 P.R. China

会议类型: 国际会议

会议名称: 2008年生物质能源技术国际会议

会议地点: 广州

会议语种:英文

页码: 649-661

在线出版日期: 2008-12-03（万方平台首次上网日期，不代表论文的发表时间）