两种水解体系对工业糠醛渣纤维素水解研究  

Hydrolysis of Cellulose from Furfural Residue with Two Hydrolysis Systems

作　　者：杨媛丽[1] 李小芳[2] 刘慧[1] 宋航[1] 兰先秋[1] YANG Yuan-li LI Xiao-fang LIU Huil SONG Hang LAN Xian-qiu(College of Chemical Engineering, Sichuan University, Chengdu 610065, China School of Applied and Chemical Engineering of Xichang College, Xichang 610000, China)

机构地区：[1]四川大学化学工程学院,四川成都610065 [2]西昌学院轻化工程学院,四川西昌610000

出　　处：《高校化学工程学报》2016年第5期1140-1145,共6页Journal of Chemical Engineering of Chinese Universities

摘　　要：探究并对比了稀酸和醇酸两种水解体系对工业糠醛渣纤维素的水解情况。在稀酸水解体系中,当硫酸浓度8%、水解温度101℃、水解时间3 h,纤维素水解率42.4%、葡萄糖产率27.8%、收率72.2%,在此酸浓度条件下,探究了酸醇体系的乙醇用量对糠醛渣纤维素水解的影响。在酸浓度8%、乙醇浓度40%、水解温度83℃、水解时间2.5 h下,纤维素水解率60.1%、葡萄糖产率50.9%、收率79.1%。与稀酸水解体系相比较,醇酸体系纤维素水解率提高29.4%,葡萄糖产率提高45.4%、收率提高9.6%,水解时间减少0.5 h,水解温度降低18℃。This work studied and compared the hydrolysis of cellulose from furfural residue in dilute acid andalkyd systems. When studied under the dilute acid system with parameters of sulfuric acid concentration 8%,hydrolysis temperature 101 ℃, hydrolysis time 3 h, the best cellulose hydrolysis rate is 42.4%, with glucoseyield of 27.8% and sugar yield of 72.2%. Cellulose hydrolysis in an alkyd system under the above acid solutionwas fiLrther investigated. When the acid concentration is 8%, ethanol addition percentage is 40%, hydrolysistemperature is 83℃ and hydrolysis time is 2.5 h, the cellulose hydrolysis rate can reach to 60.1%, with glucoseand sugar yields of 50.9% and 79.1%, respectively. Therefore, the alkyd system can increase cellulosehydrolysis rate by 29.4%, glucose yield by 45.4% and suger yield by 9.6%. Moreover, the hydrolysis time isreduced by 0.5 h and the hydrolysis temperature is decreased by 18℃.

关 键 词：糠醛渣 纤维素 醇酸 水解 

分 类 号：TQ353.6[化学工程]