硅胶负载硅钨酸催化合成乙酸正丁酯  

Catalytic Synthesis of n-Butyl Acetate with H_4SiW_(12)O_(40)/SiO_2

作　　者：杨水金[1] 刘合谱 杨洪波 吴远祥 

机构地区：[1]湖北师范学院化学与环境工程学院,黄石435002 [2]湖北黄石一中,黄石435000

出　　处：《化工中间体》2011年第11期46-49,共4页

摘　　要：以硅胶负载硅钨酸为催化剂,通过乙酸与正丁醇反应合成了乙酸正丁酯。较系统地研究了酸醇量比、催化剂用量、带水剂用量及反应时间等条件对收率的影响。结果表明:在n(乙酸):n(正丁醇)=1:1.6,催化剂用量为反应物总质量的0.56%,环己烷为带水剂用量为10mL,反应时间60min的优化条件下,乙酸正丁酯的收率可达96.5%。Bn-Butyl acetate was synthesized from acetic acid and butanol in the presence of H4SiW12O40/SiO2.The factors influencing the synthesis were investigated.The optimum conditions were found.The optimum conditions were as follows:molar ratio of acetic acid to butanol is 1:1.6,the mass ratio of the catalyst used to the reactants is 0.56%,and the reaction time is 60min.H4SiW12O40/SiO2 is an excellent catalyst for synthesizing butyl acetate and the product yield can reach over 96.5%.

关 键 词：乙酸正丁酯 硅胶负载硅钨酸 催化 酯化反应 

分 类 号：TQ2[化学工程—有机化工]