【摘要】 通过稀土固体超强酸作催化剂,对乙酸与低级醇的酯化反应进行研究.结果表明,三元稀土固体超强酸S2O2-8/Nd2O3-Zr O2-Al2O3具有优良的催化性能,其它最佳条件为:酸醇摩尔比为1 2,催化剂用量0.75 g,乙酸用量0.1 mol,反应时间3 h.在此条件下,酯化率可达到96.16%,催化剂重复使用3次以内,酯化率仍可达到92%以上.更多还原

【Abstract】 The esterification of acetic acid and lower alcohol was studied by using the catalyst of rare earth solid superacid. Results showed ternary rare earth solid superacid S2O2-8/ Nd2O3-Zr O2-Al2O3 possessed the highest catalytic activity. Other optimum conditions were as follows: Ratio of acid to alcohol of 1 2,catalyst amount of 0. 75 g,acetic acid amount of 0. 1mol,reaction time of 3 h. Under these optimum conditions,the esterification efficiency can reach 96. 16%,the esterification efficiency can still be over 92% when the catalyst is reused within three times.更多还原