八面沸石在精细有机合成中的催化作用——X脱铝超稳Y催化苯甲酸与异戊醇的酯化反应

Studies on the Catalysis of Faujusite in Fine Organic Synthesis—X Esterification of Benzoic Acid with Isopentyl Alcohol Catalyzed by Dealuminated USY

研究了脱铝超稳Ｙ催化苯甲酸与异戊醇直接酯化反应．考察了催化剂硅铝比，催化剂用量，反应物配比，带水剂和反应时间对酯化反应的影响．结果表明，在最佳反应条件下，苯甲酸转化率达９８％以上，催化剂可重复使用．该催化剂亦能用于催化苯甲酸与异丙醇、正丁醇、异丁醇的酯化反应．

In this paper, the direct esterification of benzoic acid and isopentyl alcohol catalyzed by dealuminated USY was studied. The influence of silica/alumina in the catalyst, catalyst amount, reactant ratio, water carrying agents and reaction time on the reaction was investigated. Under optimum conditions, the conversion was over 98%. The catalyst could also be used to catalyze the esterification of benzoic acid with isopropyl alcohol, n butyl alcohol and isobutyl alcohol and was reusable.