摘要
将生物柴油酶法生产工艺的废液(含甘油5%),经过碱处理—减压蒸馏法除溶剂—除胶—真空蒸馏处理后,获得纯度为90.43%的甘油.提取的甘油和冰醋酸反应,反应条件如下:磷钨酸为催化剂,甲苯为带水剂,温度110℃,甘油与冰醋酸的物料比为1∶5,催化剂使用量为原料甘油的1.6%,反应时间6 h.三醋酸甘油酯的收率可以达到90%以上.
Waste water from enzymatic biodiesel technology containing 5% glycerol was treated by alkali treatment,vacuum distillation,removing colloidal,and vacuum distillation to collect glycerol of purity up to 90.43%.The glycerol reacted with acetic acid（material ratio 1∶5） to get glyceryol triacetate with phosphotungstic acid catalyst（accouting for 1.6% of glycerol）,toluene as water-carrying agent,at 110 ℃.Thus more than 90% glyceryol triacetate were produced in 6 hours.
出处
《上海大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第5期522-525,共4页
Journal of Shanghai University:Natural Science Edition
基金
上海市联盟计划资助项目(094250)
上海市重点学科建设资助项目(S30109)
关键词
生物柴油
甘油
三醋酸甘油酯
磷钨酸
biodiesel
glycerin
glyceryl triacetate
phosphotungstic acid
