固载杂多酸盐催化合成苯甲酸正戊酯

Catalytic Synthesis of n-Amyl Benzoate with TiSiW_(12)O_(40)/TiO_2

首次报道了以固载杂多酸盐TiSiW12 O4 0 /TiO2 为多相催化剂 ,对以苯甲酸和正戊醇为原料合成苯甲酸正戊酯的反应条件进行了研究 .实验表明 :TiSiW12 O4 0 /TiO2 是合成苯甲酸正戊酯的良好催化剂 .最佳反应条件为 :醇酸物质量比为 4∶1,催化剂用量为反应物料总量的 1.5 % ,反应时间为 2 .5h .上述条件下 ,苯甲酸正戊酯的产率可达 96 .7% .

The synthesis of n-amyl benzoate was studied with pent a nol and phenylformic acid as reactants,and reaction conditions were selected. It showed that TiSiW 12O 40/TiO 2 was an excellent catalyst for the syn thesis of n-amyl benzoate, and the optimum reaction conditions were that the mol ar ratio of pentyl to acid was 4:1, the mass ratio of the catalyst used in the r eactants was 1.5%, and the reaction time was 2.5 h. Under these conditions, the yield of n-amyl benzoate reached 96.7%.