关于甲苯歧化反应,早在四十年代末就已经开始了研究。最早的甲苯歧化反应使用的是 SiO_2—Al_2O_3固体酸催化剂。如 P.H.Given 和 D.L.Hammnick在1大气压、450℃的条件下,使甲苯缓慢地(液体小时空速为0.06时~(-1))通过 SiO_2—Al_2O_3催化剂进行气固非均相反应,发现甲苯有明显地歧化反应,得到的产物组成为(mol%):C_69.8%、C_777.7%、C_88.1%、C_9无。以后又有人用 SiO_2—Al_2O_3催化剂在高压釜中进行了甲苯歧化的液相反应,在用25%H_2SO_4活化了的胶盐土 Toluene disproportionation reactions began as early as the late 1940s. The earliest toluene disproportionation reaction using SiO_2-Al_2O_3 solid acid catalyst. Such as PHGiven and DL Hammickick at 1 atm, 450 ℃ under the conditions of toluene slowly (liquid hourly space velocity 0.06 h -1) through gas-solid heterogeneous reaction of SiO 2 -Al 2 O 3 catalyst found toluene Obviously disproportionation reaction, the resulting product composition (mol%): C_69.8%, C_777.7%, C_88.1%, C_9 no. Later someone with the SiO 2 -Al 2 O 3 catalyst in the autoclave toluene disproportionation of the liquid phase reaction, with 25% H_2SO_4 activated gelatin salt soil