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Chapitre D'ouvrage Année : 2016

Zeolite Y Type

Anne Julbe
Martin Drobek

Résumé

Zeolite Y, together with zeolite X, belongs to the family of aluminosilicate molecular sieves with a faujasite-type structure (FAU), which is characterized by the basic formula |(Ca, Mg, Na 2 ) 29 (H 2O) 240 |[Al 58 Si 134 O 384 ]– FAU (Baerlocher 2007). Faujasite is a rare zeolite, although its synthetic counterparts Linde X and Linde Y are largely used as sorbents and catalysts. Zeolite Y has a higher Si/Al atomic ratio than zeolite X (typically in the range 1–1.5). Therefore, the higher content of silica confers zeolite Y with higher thermal stability. The 24-tetrahedracuboctahedral units (sodalite cages) in the FAU framework type are arranged in the same way as the carbon atoms in diamond. They are connected via hexagonal prisms (double 6-rings) forming a 3-dimensional porous channel structure along [110], characterized by 12-oxygen ring window openings with the aperture of 8 Å and supercages of approximately 12 Å (McCusker and Baerlocher 2001). The FAU-type zeolite supercage viewed...

Domaines

Chimie
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Dates et versions

hal-01708114 , version 1 (13-02-2018)

Identifiants

Citer

Anne Julbe, Martin Drobek. Zeolite Y Type. Drioli E.; Giorno L. Encyclopedia of Membranes, Springer, 2016, 978-3-662-44323-1. ⟨10.1007/978-3-662-44324-8_608⟩. ⟨hal-01708114⟩
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