固体超强酸催化合成氯乙酸异辛酯  

Catalytic Synthesis of Isooctyl Choloroacetate by Solid Super Acid

作　　者：宗蔚[1] 章亚东[1] 

机构地区：[1]郑州大学化工学院,郑州450001

出　　处：《化工生产与技术》2008年第1期32-34,共3页Chemical Production and Technology

摘　　要：以自制固体超强酸为催化剂,以氯乙酸和异辛醇为原料合成氯乙酸异辛酯。考察了催化剂用量、反应物料物质的量的比、带水剂用量及反应时间对酯化反应的影响。实验结果表明,TiO2-SO42-类固体超强酸具有良好的催化性能,反应最佳条件为:氯乙酸用量为0.15mol时,n(异辛醇):n(氯乙酸)=1.1:1.0,催化剂质量分数为反应物的质量的1.2%,带水剂为10mL,反应时间为2.5h。在此条件下,氯乙酸异辛酯的收率达98%,且催化剂重复使用5次,氯乙酸异辛酯的收率无明显下降。Isooctyl choloroacetate was synthesized by choloroacetic acid and isooctanol with our self-made solid super acid as the catalyst. Effects of catalyst amount, ratio of the reaction materials isooctanol and choloroacetic acid, water carrying agent amount and reaction time on esterification were discussed. Results showed that TiO2-SO42- had good catalytic performance, the best reaction conditions were as follows: at the conditions of chloroacetic acid amount 0.15 mol, n(isooctyl alcohol): n(chloroacetic acid)=1.1: 1.0,mass of the catalyst is 1.2% of the total reactants, water carrying agent was 10 mL, reaction time was 2.5 h. Yield of isooctyl chloroacetate reached 98% under such conditions. The catalyst could be recycled 5 times and the yield of isooctyl choroacetate was not reduced obviously.

关 键 词：固体超强酸 氯乙酸异辛酯 催化酯化 

分 类 号：TQ225.24[化学工程—有机化工]