Para-selective catalysis of Fe~(3+) -mordenite in chlorination of toluene

The selective chlorination toluene catalyzed by using mordenite modified with Fe 3+ has been studied.The para selective catalysis of Fe NaM(mordenite)with low Fe 3+ content is more powerful than NaM or the one with high content of Fe 3+ ,and the X ray diffraction analysis showed that Fe NaM retained the same crystal form as NaM.The para selectivity was more than 78% and p /o chlorotoluene isomer's proportion was up to 3 9 when the toluene chloridized with total reflux in catalytic distillation column filled with Fe NaM,Cl 2 velocity 35 ml/min,and toluene conversion below 40%.