壳聚糖硫酸盐催化丙酸丁酯的绿色合成研究  

Green Synthesis of n-Butyl Propionate Catalyzed by Chitosan Sulfate

作　　者：张晓丽[1] 于杨[1] 刘迪[1] 刘春生[1] 罗根祥[1] 

机构地区：[1]辽宁石油化工大学石油化工学院,辽宁抚顺113001

出　　处：《香料香精化妆品》2007年第2期14-16,共3页Flavour Fragrance Cosmetics

摘　　要：研究了丙酸与丁醇在壳聚糖硫酸盐催化剂作用下的酯化反应,考察了反应时间、催化剂用量、醇酸摩尔比等因素对丙酸丁酯酯化率的影响。实验结果表明反应的最佳条件为:丙酸用量为0.1mol,醇酸摩尔比为1.4,壳聚糖硫酸盐用量为1.2g,反应时间为1.5h,酯化率达97.2%,催化剂重复使用5次仍保持较高活性。无污染产生,具有绿色合成的特点。产品经折光率、红外光谱进行了表征。The esterification of n-butyl alcohol with propionic acid was studied by using chitosan sulfate as catalyst. The effect of some factors, such as reaction time, the amount of catalysts and the ratio of n-butyl alcohol to propionic acid on the yield of n-butyl propionate were carefully studied. The experiment results showed 1hat the best reaction conditions were as follows： when the amount of propionic acid was 0. 1 mol. the ratio of n-butyl alcohol to propionic acid was 1.4, the amount of chitosan sulfate was 1.2g, through reacting 1.5 h, the yield of n-butyl propionate reached 97.2 %. The catalyst kept high capability after reused five times. The process has no pollution and characters of green synthesis. The product was characterized by refrac tire index and IR.

关 键 词：丙酸丁酯 壳聚糖硫酸盐 丙酸 丁醇催化酯化 

分 类 号：TQ654[化学工程—精细化工]