SO_4^(2-)/TiO_2-MoO_3催化合成丁酸系列酯  

Catalytic Synthesis of Butyric Acid Esters with SO_4^(2-)/TiO_2-MoO_3

作　　者：杨水金[1] 谢国华[1] 

机构地区：[1]湖北师范学院化学与环境工程系,湖北黄石435002

出　　处：《精细与专用化学品》2004年第18期17-19,21,共4页Fine and Specialty Chemicals

基　　金：湖北省教育厅重点科研基金 (2 0 0 4D0 0 7);湖北师范学院无机化学重点学科基金资助项目

摘　　要：以固体超强酸SO2 -4/TiO2 MoO3 为催化剂 ,通过正丁酸和正戊醇反应合成了丁酸正戊酯 ,探讨了诸因素对收率的影响。合成丁酸正戊酯的最优条件为醇酸物质的量比为 1 5∶1,催化剂用量为反应物料总质量的2 0 % ,反应时间 1 5h。在上述最优条件下 ,以乙醇、丙醇、丁醇、异戊醇和正丁酸为原料合成丁酸系列酯 ,丁酸乙酯的收率为 14 9% ,丁酸丙酯的收率为 4 5 4 % ,丁酸丁酯的收率为 6 8 0 % ,丁酸正戊酯的收率为 97 9% ,丁酸异戊酯的收率为 91 1%。实验表明 :SO2 -4/TiO2 MoO3 具有良好的催化活性。The n-amyl butyrate is synthesized based on n -butyric acid and n-amyl alcohol using SO. 2- 4/TiO 2-MoO 3 as c atalyst. The optimum reaction condition is that the molar ratio of alcohol to ac id is 1.5∶1, the mass ratio of the catalyst used to the reactions is 2.0 %, and the reaction time is 1.5h. The synthesis of butyric acid esters was studied using ethyl alcohol, propyl alcohol, n-butyl alcohol, n-amyl alcohol, iso-amyl alcohol and n-butanoic acid as reactant separately u nder the optimum conditions mentioned above, the yield of ethyl butyrate is 14 .9%, propyl butyrate 45.4%, n-butyl butyrate 68.0%, n-amyl butyrate 97.9%, iso-amyl butyrate 91.1% respectively. It showed that SO. 2- 4/TiO 2-MoO 3 is an excellent catalyst for the synthesis of butyric acid este rs.

关 键 词：固体超强酸 催化剂 正丁酸 酯化反应 丁酸酯 

分 类 号：O643.3[理学—物理化学]