Abstract
High-silica ZSM-5 and [B]ZSM-5 (both containing ca. 600 ppm Al) are catalytically activated by hydrothermal treatment in the presence of alumina. Aluminium is transported as an aquo-species from Al2O3 into the zeolite and enters the framework in the tetrahedral conformation. The presence of framework B induces enhanced activation, the degree of activation increasing with B content. This is due to the hydrolytic instability of framework B and hence its ready substitution by Al.
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Schedule a callMore From: Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases
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