摘要
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%.
出处
《湖北师范学院学报(自然科学版)》
2005年第1期66-69,共4页
Journal of Hubei Normal University(Natural Science)
基金
湖北省教育厅重点科研基金资助项目(2004D007)