Synthetic method of solid superacid TiSiW 12 O 40 /TiO 2 was described.The synthesis of iso amyl propionate catalyzed by TiSiW 12 O 40 /TiO 2 has been studied and the factors influencing on the yield is discussed.It s...Synthetic method of solid superacid TiSiW 12 O 40 /TiO 2 was described.The synthesis of iso amyl propionate catalyzed by TiSiW 12 O 40 /TiO 2 has been studied and the factors influencing on the yield is discussed.It shows that it’s an excellent catalyst,the yield of the iso amyl propionate can be over 77% when the molar ratio of iso amyl alcohol and propionic acid is 1.2,the quality of TiSiW 12 O 40 /TiO 2 is equal to 1.5% feed stock,the reaction time is 80min and the reaction temperature is about 103～107℃.展开更多
报道了以固载杂多酸盐 Ti Si W12 O4 0 / Ti O2 为多相催化剂 ,通过己酸和异戊醇反应合成了己酸异戊酯 ,探讨了 Ti Si W12 O4 0 / Ti O2 对酯化反应的催化活性 ,较系统地研究了醇酸摩尔比、催化剂用量、反应时间诸因素对收率的影响。实...报道了以固载杂多酸盐 Ti Si W12 O4 0 / Ti O2 为多相催化剂 ,通过己酸和异戊醇反应合成了己酸异戊酯 ,探讨了 Ti Si W12 O4 0 / Ti O2 对酯化反应的催化活性 ,较系统地研究了醇酸摩尔比、催化剂用量、反应时间诸因素对收率的影响。实验表明 :Ti Si W12 O4 0 / Ti O2 是合成己酸异戊酯的良好催化剂 ,在 n(醇 )∶n(酸 ) =1 .6∶ 1 ,催化剂用量为反应物总质量的 1 .5 % ,反应时间 4 5 min,使用环己烷为带水剂的适宜条件下 ,己酸异戊酯的收率可达91 .9%。展开更多
文摘Synthetic method of solid superacid TiSiW 12 O 40 /TiO 2 was described.The synthesis of iso amyl propionate catalyzed by TiSiW 12 O 40 /TiO 2 has been studied and the factors influencing on the yield is discussed.It shows that it’s an excellent catalyst,the yield of the iso amyl propionate can be over 77% when the molar ratio of iso amyl alcohol and propionic acid is 1.2,the quality of TiSiW 12 O 40 /TiO 2 is equal to 1.5% feed stock,the reaction time is 80min and the reaction temperature is about 103～107℃.
