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Immobilization of Large, Aliovalent Cations in the Small‐Pore Zeolite K‐Natrolite by Means of Pressure
Author(s) -
Lee Yongjae,
Lee Yongmoon,
Seoung Donghoon,
Im JunHyuk,
Hwang HeeJung,
Kim TaeHyun,
Liu Dan,
Liu Zhenxian,
Lee Seung Yeop,
Kao ChiChang,
Vogt Thomas
Publication year - 2012
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201201045
Subject(s) - zeolite , europium , ion exchange , inorganic chemistry , chemistry , ion , high pressure , catalysis , organic chemistry , thermodynamics , physics
High‐pressure ion exchange of small‐pore zeolite K‐natrolite allows immobilization of nominally non‐exchangeable aliovalent cations such as trivalent europium. A sample exchanged at 3.0(1) GPa and 250 °C contains about 4.7 Eu III ions per unit cell, which is equivalent to over 90 % of the K + cations being exchanged (see picture).