二苯基乙烷的合成及高性能电容器油的配制

Synthesis of Diphenylethane and Formulation of High-Performance Capacitor Oil

采用大孔全氟磺酸树脂作催化剂,苯与乙醛缩合生成1,1-二苯基乙烷,后者与单苄基甲苯掺配的油的理化电气性能与日本SAS-40油相同.通过回归正交优化实验,获得了缩合反应的最优工艺条件:催化剂用量10.05%,苯与乙醛的摩尔比8.00∶1,在回流温度下反应2.42 h.在最优工艺条件下,1,1-二苯基乙烷的收率达64.94%.

1,1-Diphenylethane was synthesized through the＇ condensation of benzene with acetaldehyde using macroporous perfluorosulfonic acid resin as the catalyst. The synthetic, when formulated with benzyl toluene, produced a kind of capacitor oil with physical chemical properties and electric performance comparable to that of SAS -40 made in Japan. Through orthogonal experiments, the optimum technical conditions of the condensation were obtained as follows： the amount of catalyst was 10.05 96, the molar ratio of benzene to acetaldehyde was 8.00 ： 1, and the reaction time was 2.42 h under refluxing. Under optimal technical conditions, the yield of 1, 1 - diphenylethane was 64.94 %.