SO_4^(2-)/TiO_2-La_2O_3催化合成丙酸丁酯  

Synthesis of n-Butyl Propionate Catalyzed by SO_4^(2-)/TiO_2-La_2O_3

作　　者：杨水金[1] 童文龙[1] 李福宝[1] 

机构地区：[1]湖北师范学院化学与环境工程系,黄石435002

出　　处：《精细石油化工进展》2004年第3期12-14,共3页Advances in Fine Petrochemicals

基　　金：湖北省教育厅重点科研基金(2002A00008)

摘　　要：首次以稀土改性的固体超强酸S0_4^(2-)/TiO_2-La_2O_3为催化剂,通过丙酸和正丁醇反应合成丙酸丁酯,并探讨了诸因素对酯收率的影响。在醇酸摩尔比1.2:1,催化剂用量占反应物料总量的2.5％,反应时间1.5 h,反应温度94～110℃的条件下,酯收率可达83.6％。SO_4^(2-)/TiO_2-La_2O_3具有良好的催化活性。n-Butyl propionate was synthesized from n-butanol alcohol and propionic acid in the presence of SO42-/TiO2-La2O3.The factors influencing the synthesis were discussed and the best conditions were determined. The optimum conditions are as follows: molar ratio of n-butanol alcohol to propionic acid is 1 .2 :1, the quantity of catalyst is equal to 2.5% of feed stocks,and the reaction time 1.5 h.SO42-/TiO2-La2O3 is an excellent catalyst for synthesizing n-butyl propionate and its yield can reach over 83.6 % .

关 键 词：SO4^2-/TIO2-LA2O3 催化合成技术 丙酸丁酯 固体超强酸 酯化反应 

分 类 号：TQ655[化学工程—精细化工]