Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
75659 | Microporous and Mesoporous Materials | 2010 | 6 Pages |
Abstract
Arrangements associating three aluminium atoms in dealuminated Y zeolites are for the first time detected using a combination of multiple-quantum MAS (MQMAS) and 2D double-quantum homonuclear NMR correlation spectroscopy. From these results, we propose a model describing the enhanced Brønsted acid sites in dealuminated Y zeolite, consisting in a configuration where framework aluminium pairs are interacting with cationic extra-framework aluminium atoms.
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Authors
Nicolas Malicki, Gregor Mali, Anne-Agathe Quoineaud, Patrick Bourges, Laurent J. Simon, Frédéric Thibault-Starzyk, Christian Fernandez,