Encyclopedia of Membranes

2016 Edition
| Editors: Enrico Drioli, Lidietta Giorno

Zeolite Y Type

  • Anne JulbeEmail author
  • Martin Drobek
Reference work entry
DOI: https://doi.org/10.1007/978-3-662-44324-8_608
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...
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© Springer-Verlag Berlin Heidelberg 2016

Authors and Affiliations

  1. 1.Institut Européen des MembranesUniversité de MontpellierMontpellierFrance