含锌五元环结构高硅沸石的合成方法

Synthesis method of zinc-containing five-membered ring structure high-silicon zeolite

Abstract

一种含锌的五元环结构高硅沸石的合成方法,是 以ZnY沸石为晶种,在含有机胺、Na
The present invention relates to a synthesis method of zinc-containing five-membered ring structural high-silicon zeolite. It is synthesized by using ZnY zeolite as seed crystal in the colloidal system containing organic amine, Na2O, Al2O3, SiO2 and water. The zinc-containing zeolite synthesized by use of said method has the X-ray diffraction spectrogram indicated by data in table 1, and its crystal interior has the big hold with about 40 angstroms, and its waterless chemical expression is ZnO.YNa2O.Al2O3.ZSiO2, in which X=0.05-0.8, Y=0.2-0.95, Z=15-100. As compared with ZnZSM-5 zeolite made by use of ion exchange method or mechanical mixing method said zeolite has higher aromatization activity and benzene selectivity.

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