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铌酸催化合成乙酸正丁酯
Catalytic Synthesis of n Butyl Acetate by Niobic Acid
【摘要】 研究了乙酸和正丁醇在铌酸催化下的反应,考察了反应时间、催化剂用量、酸醇比、反应温度等因素对产品乙酸正丁酯收率的影响。当催化剂用量为 1.2 g 每摩尔酸,乙酸和正丁醇的摩尔比为4∶1,回流搅拌反应7.0 h 时,产品乙酸正丁酯的收率可达 87.6% ,选择性为 100% 。
【Abstract】 This manuscript reported the esterification of acetic acid with n butanol catalyzed by niobic acid.The effect of different factors,such as reaction time,catalyst dosage,the ratio of acetic acid to n butanol,reaction temperature,on the yield of n butyl acetate were carefully studied.When the catalyst dosage was 1.2 g per mol acetic acid,the ratio of acetic acid to n butanol was 4∶1,the reaction time was 7.0 h under stirring and refluxing,the yield of n butyl acetate reached 87.6%,the selectivity was 100%.
【基金】 湖南省科委重点攻关资助项目
- 【文献出处】 陕西化工 ,Shaanxi Chemical Industry , 编辑部邮箱 ,1999年03期
- 【被引频次】3
- 【下载频次】89