合成乙酸异丁酯的催化剂研究进展

Progress on research of catalysts for synthesis of isobutyl acetate

介绍了稀土金属氧化物、相转移催化剂、氨基磺酸、杂多酸、硫酸铁铵及无机盐等催化剂催化合成乙酸异丁酯的研究结果,其中氨基磺酸、杂多酸、硫酸铁铵、FeCl3·6H2O和CuCl2·2H2O的催化活性高,产品质量好。作者以硅胶负载四氯化锡为催化剂,合成乙酸异丁酯最佳反应条件为:乙酸为0.1mol,醇酸比为1.5∶1,催化剂用量为1.5g,反应时间为4h,反应温度150℃,最终转化率为93.87%。SnCl4/SiO2作为催化剂,活性高,选择性好,对设备无腐蚀,可重复使用。

The studied results of catalytic synthesis of isobutyl acetate are introduced using rare earth metallic oxide,phase transfer catalyst,aminosulfonic acid,heteropoly acids,ferriammonium sulfate,and inorganic salts as catalysts .It showed that aminosulfonic acid,heteropoly acids,FeCl_3·6H_2O and CuCl_2·2H_2O had high catalytic activity and good quality of products.The author applied SnCl_2 supported on silica gel as a new catalyst to synthesize isobutyl acetate.The best reaction conditions were :acetic acid was 0.1 mol, molar ratio of iso-butyl alcohol to acetic acid was 1.5∶1,amount of catalyst was 1.5 g, reaction at 150 ℃ for 4 h,the last conversion was 93.87%.Using SnCl_4/SiO_2 as catalyst has a lot of advantages,such as high activity,excellent selectivity as well as no corrosion to facilities and may reused.