由复合催化剂催化合成乙酸异戊酯的研究

Catalytic synthesis of isopentyl acetate by using composite catalyst

探讨了以浓H2SO4-NaHSO4·H2O为复合催化剂,HAc、异戊醇为原料合成乙酸异戊酯的绿色合成工艺,着重考察各因素对合成产率的影响.通过四因素三水平的正交试验优化并确定的最佳反应条件为：反应物投料摩尔比n（HAc）∶n（异戊醇）为1∶1.2,复合催化剂配料摩尔比为n（H2SO4）∶n（NaHSO4）·H2O）为1∶1.5,复合催化剂用量为1％,带水剂用量为20％,反应温度为105～115℃,反应时间为120min,酯收率高达85％以上.

Isoamyl acetate was synthetized from acetic acid and isoamyl alcohol with NaHSO4·H2O＋ H2SO4 as the catalyst.The effects of reaction conditions on the esterification were investigated.The optimumreaction conditions were obtained as follows：acetic acid to isoamyl alcohol molar ratio=1 ∶ 1.2,n（C2H4O2） ∶ n（C6H12O）=1 ∶ 1.5,w（catalyst）=1%,w（water carring reagent toluene）=20%,reaction temperature 105-115,and reaction time 90min,esterification rate was as high as 85%.