邻苯二甲酸二异辛酯合成用催化剂研究  

Synthesis of Dioctyl Phthalate with Different Catalysts

作　　者：程晶波[1] 吴建一[2] 

机构地区：[1]浙江工业大学,杭州310014 [2]浙江嘉兴学院,嘉兴314001

出　　处：《精细石油化工进展》2003年第5期41-43,共3页Advances in Fine Petrochemicals

摘　　要：以邻苯二甲酸酐和异辛醇为原料 ,分别选用对甲苯磺酸、硫酸、磷酸、磷钨酸、SO42 -/TiO2 -Al2 O3 等催化剂 ,合成邻苯二甲酸二异辛酯 (简称DOP) ,得出DOP合成的最佳催化剂为对甲基苯磺酸。最佳反应条件为 :原料邻苯二甲酸酐与异辛醇的摩尔比为 1∶2 2 ,反应温度130℃ ,反应时间 2 .5h,催化剂用量为总质量的 1.0 % ,用环己烷作带水剂 ,邻苯二甲酸酐的转化率96 % ,产品酯含量 98% ,并研究了具有上述相同功能基的高分子催化剂———含磺酸基的高分子和负载三氯化铝的含磺酸基的高分子 ,邻苯二甲酸酐酯化转化率达 80 % ,产品酯含量 98%。Dioctyl phthalate(DOP) was synthesized from phthalic anhydride and isooctyl alcohol by catalysis of different catalysts including toluene sulfonic acid, sulfuric acid, phosphato-tungstic acid and SO 4 2- /TiO 2-Al 2O 3, etc. By comparison, it is found that toluene sulfonic acid is the best catalyst under the optimum reaction conditions of 1∶2.2 molar ratio of phthalic anhydride to isooctyl alcohol and temperature of 130 ℃ for 2.5 h with cyclohexane to bring water out. The total yield is 96% with purity of 98%. Catalytic effect of macromolecules with the same functional group as those of the above mentioned catalysts was examined with total yield and purity of 80% and 98% respectively. These catalysts contain sulfonic acid or combination of sulfonic acid and AlCl 3?

关 键 词：邻苯二甲酸二异辛酯 合成 催化剂 酯化 对甲基苯磺酸 

分 类 号：TQ414[化学工程]