Abstract
A method for introducing heteroatoms Al, Ti, and Sn into the framework of FER-type zeolite was provided. The incorporation of heteroatoms was achieved by intercalation of sub-zeolite of lamellar precursor PLS-3 that possessed disordered structure along layered direction using 4-amion-2,2,6,6-tetramentylniperidine together with salts containing a heteroatom. During intercalation, the molar ratio of Si and heteroatoms can be adjusted between 30 to ∞. Heteroatoms entered the material with the help of hydrothermal synthesis conditions used in the intercalation process, resulting in reordered layered metalosilicate structure. After mild acid treatment of these metalosilicates to remove extra-framework heteroatoms and further calcination, we obtained a three-dimensional zeolite of FER topology with framework Al, Ti, and Sn.
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