Synthesis and Research of Beta Zeolites with a Hierarchical Por Structure

Under hydrothermal conditions, Beta zeolites with a hierarchical pore system are synthesized using two structurally-directing agents: tetraethylammonium hydroxide and cationic polymer polydialldimethylammonium chloride. Zeolites with the average pore size of 1.2 to 7.2 nm were obtained by varying th...

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Bibliographic Details
Published in:Glass physics and chemistry 2020, Vol.46 (1), p.72-77
Main Authors: Brazovskaya, E. Yu, Golubeva, O. Yu
Format: Article
Language:English
Subjects:
Cationic polymerization
Ceramics
Characterization and Evaluation of Materials
Chemistry and Materials Science
Composites
Dependence
Glass
Lewis acid
Materials Science
Natural Materials
Physical Chemistry
Pore size
Porosity
Sorption
Structural hierarchy
Surface properties
Thiamine
Zeolites
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Summary:Under hydrothermal conditions, Beta zeolites with a hierarchical pore system are synthesized using two structurally-directing agents: tetraethylammonium hydroxide and cationic polymer polydialldimethylammonium chloride. Zeolites with the average pore size of 1.2 to 7.2 nm were obtained by varying the synthesis conditions. The dependence of the sorption capacity of the samples (using thiamine hydrochloride as an example) on the surface properties of zeolites, namely, on the concentration of the Lewis acid sites (LAS) with p K a 14.2, is found. Dependence of the sorption ability of the samples on their porous-texture characteristics is not found.
ISSN:1087-6596
1608-313X
DOI:10.1134/S1087659620010046