SO_4^(2-)/TiO_2La_2O_3催化剂催化合成丁酸正戊酯

Catalytic synthesis of n-amyl butyrate over SO_4^(2-)/TiO_2La_2O_3

首次以稀土改性固体超强酸SO42- /TiO2 La2O3 为多相催化剂,通过正丁酸和正戊醇反应合成了丁酸正戊酯,并探讨了诸因素对产品收率的影响。实验表明:SO42- /TiO2 La2O3 具有良好的催化活性,醇酸物质的量比为 1. 7∶1,催化剂用量为反应物料总量的 2. 5%,反应时间 1. 5h,反应温度 121℃ ~134℃,酯收率可达 92. 2%。

Synthetic conditions of n-amyl butyrate using SO_4 2-/TiO_2-La_2O_3 as catalyst were studied. The optimum conditions are: molar ratio of n-amyl to butyl acid is 1.7∶1,the quantity of catalyst is equal to 2.5% feed stock, the reaction temperature is 121℃~134℃, and the reaction time is 1.5 h. SO_4 2-/TiO_2-La_2O_3 is an excellent catalyst for synthesizing n-amyl butyrate and its yield can reach over 92.2%.