Interzeolite Transformation from FAU-to-EDI Type of Zeolite

Autor:	Stanislav Ferdov
Jazyk:	angličtina
Rok vydání:	2024
Předmět:	interzeolite transformation hierarchical FAU EDI room-temperature synthesis OSDA-free synthesis Organic chemistry QD241-441
Zdroj:	Molecules, Vol 29, Iss 8, p 1744 (2024)
Druh dokumentu:	article
ISSN:	1420-3049 05639336
DOI:	10.3390/molecules29081744
Popis:	This study reports for the first time the transformation of the pre-made FAU type of zeolite to the EDI type of zeolite. The concentration of the KOH solution controls this interzeolite transformation, which unusually occurs at both room temperature and under hydrothermal conditions. The transformation involves the amorphization and partial dissolution of the parent FAU phase, followed by the crystallization of EDI zeolite. At room temperature, the transformation (11–35 days) provides access to well-shaped nano-sized crystals and hollow hierarchical particles while the hydrothermal synthesis results in faster crystallization (6–27 h). These findings reveal an example of an interzeolite transformation to a potassium zeolite that lacks common composite building units with the parent zeolite phase. Finally, this work also demonstrates the first room-temperature synthesis of EDI zeolite from a gel precursor.
Databáze:	Directory of Open Access Journals
Externí odkaz:	https://doaj.org/article/1ec80e4044d2417a9e056393368682ff Zobrazit plný text záznamu View record in DOAJ Plný text ve formátu PDF Plný text ve formátu HTML
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