Abstract
The post-synthetic galliation of BEA by treatment of dealuminated zeolite with acidic gallium solutions was investigated by means of XRD, 71 Ga MAS NMR, FT-IR and nitrogen adsorption. It was found that the gallium species in the solution are easily incorporated into the framework of dealuminated BEA zeolite by controlling the pH value of the solution below 7. The cumene cracking activity of the galliated BEA zeolite at pH 4 was comparable to that of the galliated BEA zeolite prepared by the direct hydrothermal synthesis method.
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