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SO42-/TiO2-La2O3催化合成丙酸丁酯
Synthesis of n-Butyl Propionate Catalyzed by SO42-/TiO2-La2O3
【摘要】 首次以稀土改性的固体超强酸S042-/TiO2-La2O3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%。SO42-/TiO2-La2O3具有良好的催化活性。
【Abstract】 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】 丙酸丁酯;
固体超强酸;
稀土;
催化;
酯化反应;
【Key words】 n-butyl propionate; solid superacid; rare earth; catalysis; esterification;
【Key words】 n-butyl propionate; solid superacid; rare earth; catalysis; esterification;
【基金】 湖北省教育厅重点科研基金(2002A00008)
- 【文献出处】 精细石油化工进展 ,Advances in Fine Fetrochemicals , 编辑部邮箱 ,2004年03期
- 【分类号】TQ655
- 【被引频次】16
- 【下载频次】66