TiSi W_(12)O_(40)/TiO_2催化合成乙酸正丙酯

Synthesis of n-propyl acetate using TiSi W_(12)O_(40)/TiO_2 as catalyst

首次报道了以固载杂多酸盐TiSiW12 O40 /TiO2 为多相催化剂 ,通过乙酸和正丙醇反应合成了乙酸正丙酯 ,并探讨了诸因素对产率的影响。实验表明 :TiSiW12 O40 /TiO2 具有良好的催化活性 ,醇酸物质的量比为1 60∶1,催化剂用量为反应物料总量的 1 0 % ,反应时间 1 5h ,反应温度 90℃～ 92℃时 ,产率可达 94 5 8%。

The synthesis of n propyl acetate using TiSiW 12 O 40 /TiO 2 as catalyst has been studied.The factors influencing the synthesis were discussed and the best conditions were found out.The optimum condition is molar ratio of n propyl to acetic acid is 1.60∶1,the quantity of catalyst is equal to 1.0% feed stock,the reaction temperature is 90 ℃～92 ℃,and the reaction time is 1.5 h.TiSiW 12 O 40 /TiO 2 is an excellent catalyst for synthetizing n propyl acetate and its yield can reach over 94.58%.