Issue 2, 1992
From the journal:

Journal of Materials Chemistry

Synthesis characteristics of NH4-[B]ZSM-5 in the presence of fluoride ions

John Dwyer  and  Jingping Zhao  

Abstract

NH4-[B]ZSM-5 is synthesised directly from a non-alkaline medium in the presence of fluoride ions. By influencing the equilibration of reactants, the fluoride ions control the crystallisation rate of the zeolite, affect the framework composition (Si/B ratio) of the products and promote crystal growth along the c axis direction of the zeolite MFI structure. Preferential crystallisation of silica-rich products is observed when higher concentrations of fluoride ions are present in the reaction mixtures. Increased dilution of reaction mixtures results in more elongated crystals with reduced boron substitution. A composition diagram of reaction mixtures for synthesis of NH4-[B]ZSM-5 is presented.

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Article information

DOI
https://doi.org/10.1039/JM9920200235
Article type
Paper

J. Mater. Chem., 1992,2, 235-238

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Synthesis characteristics of NH4-[B]ZSM-5 in the presence of fluoride ions

J. Dwyer and J. Zhao, J. Mater. Chem., 1992, 2, 235 DOI: 10.1039/JM9920200235

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