Abstract
Isomorphous substitution of Al by Ga into the framework of zeolites Y, ZSM-20, CSY, USY and beta has been achieved by reaction with aqueous gallium fluoride solution. Characterisation by XRD, solid-state NMR, FTIR, SIMS and sorption studies demonstrates that Ga is incorporated into the framework of the zeolite, except for USY where Ga substitutes for non-framework aluminium. Preliminary catalytic results for the conversion of hexane show that reaction rates increase with increased amounts of framework Ga.
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