Physico-Chemical Characterization of ZSM-5 Zeolite Synthesized Without Template

Abstract

Abstract: High resolution ²⁹Si, ²⁷Al, ²³Na NMR is used to characterize the local structure of ZSM-5 zeolites with various Si/Al ratios synthesized without template. The dealumination from the framework of ZSM-5 zeolites treated at different temperatures and steaming times is studied by ²⁹Si and ²⁷Al MAS NMR. Asystematic X. R. D. study on the conditions under which the crystallographic shape of ZSM-5 type changes from orthorhombic to monoclinic(or vice versa) is reported.

Key words: Synthesis without template, Local structure, Dealumination, MAS NMR

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Guo Zhenya, Wang Jingzhong, Wang Kaixuan, Zhou Daming, Xiang Shouhe, Li Hexuan . Physico-Chemical Characterization of ZSM-5 Zeolite Synthesized Without Template[J]. Chem. J. Chinese Universities, 1990, 11(8): 800.

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Physico-Chemical Characterization of ZSM-5 Zeolite Synthesized Without Template

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