壳聚糖负载铁(Ⅲ)催化合成乙酸正丁酯  

Catalytic Synthesis of n-butyl Acetate by Chitosan Doped with Iron(Ⅲ)

作　　者：韩春玉[1] 刘春生[1] 张少华[1] 

机构地区：[1]辽宁石油化工大学化学与材料科学学院,辽宁抚顺113001

出　　处：《当代化工》2011年第3期232-234,254,共4页Contemporary Chemical Industry

摘　　要：研究了壳聚糖负载铁催化乙酸与正丁醇的酯化反应,考察了反应时间、酸醇比、催化剂质量、带水剂体积等因素对酯化反应收率的影响。结果表明,在回流条件下,醇酸物质的量比为1.2,催化剂质量为0.5 g,带水剂环己烷体积为8 mL,反应时间为50 min,酯化收率可达到92.3%。催化剂重复使用5次催化效果未见明显降低。The esterification of acetic acid and butanol catalyzed by chitosan doped with iron（Ⅲ） was studied.Effects of reaction time,reactant ratio,catalyst dosage and dosage of water-carrying agent on yield of the esterification were investigated.The results show that the most suitable conditions for the reaction are as follows： molar ratio of butanol to acid 1.2,catalyst dosage 0.5 g,cyclohexane as the water-carrying agent 8 mL,reaction time 50 min.Under above conditions,the yield can reach to 92.3%.The catalyst can be reused five times without significant reduction of catalytic activity.

关 键 词：乙酸正丁酯 合成 壳聚糖负载铁(Ⅲ) 催化 

分 类 号：TQ655[化学工程—精细化工]