摘要
提高水解效率、减少无机酸催化剂的用量是解决目前我国皂素生产企业严重环境污染的根本思路。文中对比了微波与水浴2种加热方式下薯蓣皂苷的水解效率,通过正交实验研究了微波辐照时间、微波功率、H+浓度3个因素对皂苷水解的影响,获得了优化的反应条件。实验结果表明,与传统的水浴加热方法相比,微波可以明显促进薯蓣皂苷的水解。在微波作用下,HCl的用量可减少50%,水解时间缩短为水浴水解的8%,薯蓣皂苷元得率可提高20%。微波强化水解的最优条件为微波功率700 W,H+浓度2 mol/L,水解时间20 min。
Improving the efficiency of hydrolysis and reducing the usage of inorganic acid catalysts is a key solution to the severe pollution caused by the production of diosgenin in China. The efficiency of hydrolysis under two different heating manners, microwave and water bath was compared. An orthogonal test was designed to investigate the influential factors of the hydrolysis process under microwave radiation such as radiation time, power of microwave and concentration of hydrogen ions. It shows that microwave radiation can greatly accelerate the hydrolysis rate of diocsin. Compared to common heating method such as water bath, microwave can reduce the amount of hydrochloric acid used as catalyst by 50% ; shorten the reaction time to only 8% ; and increase the diosgenin yield by 20%. The optimized parameters are： microwave power 700 W, concentration of H^ ＋ 2 mol/L, radiation time 20 min.
出处
《化学工程》
EI
CAS
CSCD
北大核心
2007年第12期30-33,共4页
Chemical Engineering(China)
基金
河南省科技厅资助项目(0511020200
0624270019)
传热强化与过程节能教育部重点实验室开放基金(KF0609)
关键词
微波
催化
水解
薯蓣皂苷
microwave
catalyze
hydrolysis
diocsin
