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Date of Publication:2022-10-09

Journal:石油学报 石油加工

Affiliation of Author(s):化工学院

Issue:2

Page Number:61-67

ISSN No.:1001-8719

Abstract:The studies on extra-framework titanium in titanium silicalites synthesized with different methods were carried out by UV-Vis spectroscopy. The results show that the reference has great effect on the peak position in the UV-Vis spectra of the titanium silicalites and different methods of synthesis will lead to different existing form of the extra-framework titanium. In titanium silicalites synthesized by hydrothermal method, the extra-framework titanium will exist in the form of anatase with TPAOH as the template, while with TPABr as the template, the extra-framework titanium will exist in condensed hexacoordination form (non-anatase and non-rutile). In the titanium silicalites prepared by gas-solid isomorphous replacement, the extra-framework titanium will exist in the form of rutile or anatase.

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