TiSiW_(12)O_(40)/TiO_2 催化合成丙酸正丁酯

Synthetizing n-butyl propionate using TiSiW_(12)O_(40)/TiO_2 as catalyst

首次以固载杂多酸盐 Ti Si W12 O4 0 /Ti O2 为多相催化剂 ,通过丙酸和正丁醇反应合成了丙酸正丁酯 ,并探讨了诸因素对酯化率的影响。实验表明 :Ti Si W12 O4 0 /Ti O2 具有良好的催化活性 ,醇酸物质的量比为 1 .3∶ 1 ,催化剂用量为反应物料总量的 1 .5% ,反应时间 1 .0 h,反应温度 1 1 6～ 1 2 8℃ ,酯化率可达 71 %

The synthesis of n butyl propionate using TiSiW 12 O 40 /TiO 2 as catalyst has been studied.The optimum conditions are:molar ratio of propanoic acid to n butanol is 1∶1.3,the quantity of catalyst is equal to 1.5% feed stock,the reaction temperature is 116～128℃,and the reaction time is 1.0 h.TiSiW 12 O 40 /TiO 2 is an excellent catalyst for synthetizing n butyl propionate and its yield can reach over 71%.