A shape-selective catalyst based on LaZSM5 zeolite with additions of MgO and Al_2O_3 is prepared for the alkylation of toluene ethylene,resulting into the obvious increase of para-methyl ethylbenzene selectivity.
以LaZSM5沸石为基质,添加铝和镁的氧化物所制得的择形催化剂,可大大提高乙烯与甲苯烷基化制甲基乙苯中对甲基乙苯选择性。
The "opposite effect" problem of toluene alkylation on ZSM-5 catalyst was studied systematically.
并采用了K-Mg改性,制备出对甲苯乙基化具有高初活性和高对位选择性的催化剂。
