The selective vapour-phase synthesis of 2-methylquinoline by alkylation of
quinoline with methanol was carried out over HY, HZSM-5(30), CrHY, CeHY, La
HY: LaKHY and CeHZSM-5(30) zeolites in a fixed-bed reactor at atmospheric p
ressure, The yields of 2-methylquinoline over modified zeolites, especially
those of doubly promoted LaKHY, were found to be higher than those of unmo
dified zeolites. The maximum yield of 2-methylquinoline obtained was 60.6 w
t% at 91.5 wt% selectivity over LaKHY zeolite. The active sites responsible
for this methylation were found to be more on Lewis acidic sites available
over zeolite systems.