摘要
在室温离子液体中,以酸功能化离子液体为催化剂进行纤维素的微波辅助降解,分别考察了二甲基亚砜、催化剂和水对纤维素降解的影响.结果表明:纤维素在1-烯丙基-3-甲基咪唑氯盐中的降解效果优于在1-丁基-3-甲基咪唑氯盐中的降解效果;二甲基亚砜能有效地降低体系的黏度,提高降解的效果;酸功能化离子液体的催化效果与其酸性大小相关;微波640 W下添加0.05 g催化剂,0.04 g水,0.6 g二甲基亚砜,反应60 s,纤维素降解效果最佳.
Hydrolysis of cellulose in room temperature ionic liquids was carried out under microwave irradiation（MW） with sulfonic acid-functionalized ionic liquids（SFILs） as catalysts.The effect of dimethyl sulfoxide loading,water loading and catalyst amount were investigated.The result showed that hydrolysis of cellulose in 1-ally-3-methylimidazolium chloride was better than in 1-butyl-3-methylimidazolium chloride.Dimethyl sulfoxide was able to sharply reduce the viscosity and increase the total reducing sugar yield.The catalytic activity of the SFILs was showed to be relevant to their acidity.And the optimal reaction conditions were as follows： amount of SFILs 0.05 g;water 0.04 g;DMSO 0.6 g;microwave power 640 W and irradiation time 60 s.MW seemed greatly enhanced the cellulose hydrolysis.
出处
《浙江师范大学学报（自然科学版）》
CAS
2011年第3期311-316,共6页
Journal of Zhejiang Normal University:Natural Sciences
基金
国家自然科学基金资助项目(20673102)
浙江省科技计划项目(2009C31084)
关键词
纤维素
降解
酸功能化离子液体
微波
cellulose
hydrolysis
acid-functionalized ionic liquids
microwave
