MoZn /AlPO4-5 zeolite: Preparation, structural characterization and catalytic dehydration of ethanol

Aluminophosphate compounds (AlPO4-5) with the AFI structure framework are important members of microporous zeolites group and molecular sieves materials because having an enormous variety of structures leading to high potential catalytic applications. AlPO4-5 molecular sieves have been prepared via the hydrothermal reaction by using triethylamine as a template. Molybdenum and zinc bimetal supported AlPO4-5 zeolite catalysts (MoZn/AlPO4-5) were prepared using a co-impregnation method with different molar ratios. The obtained samples were described by the physicochemical characterizations techniques. The bimetal ratios effect towards the dehydration of ethanol was investigated. MoZn(4)/AlPO4-5 exhibit the most active catalyst towards ethylene formation and the parent AlPO4-5 was the least active but with high selectivity towards diethyl ether production. This conversion convinced by ZnMoO4 phase formation during Mo and Zn oxides interactions leading to improving the acid sites which are a favorite environment and augment to ethylene formation.