synthetic zeolite
2.Highly siliceous faujasite was prepared by dealumination of synthetic Y-type zeolite and was then modified with (NH_4)_2SiF_6. The decay of cracking activity and coke deposition on SiCl_4 modified zeolites,Y(T-1,2,3),were compared with those modified with SiF_6, FSY-l,2,3,by catalytic cracking of cumene in a continuous laboratory reactor.
5.The optimum synthetic conditions of ethyl chloroacetate are: molar ratio of chloroacetic acid to ethanol is 1:8, the quantity of catalyst[Fe2(SO4)3 xH2O] is 10% of the mass of chloroacetic acid, reaction time is 1 hour, 5A zeolite was used as dehydrating agent. In these conditions, the yield of ethyl chloroacetate was up to 73%.
