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Detection of the ’invisible aluminium’ and characterisation of the multiple aluminium environments in zeolite USY by high-field solid-state NMR

TitleDetection of the ’invisible aluminium’ and characterisation of the multiple aluminium environments in zeolite USY by high-field solid-state NMR
Publication TypeJournal Article
Year of Publication2000
AuthorsFyfe, CA, Bretherton, JL, Lam, LY
JournalChemical Communications
Pagination1575-1576
Type of ArticleArticle
ISBN Number1359-7345
KeywordsACID SITES, AL-27 NMR, ANGLE-SPINNING NMR, H-Y ZEOLITES
Abstract

The detection of all of the aluminium present in steamed zeolite H-Y catalysts by Al-27 MAS NMR at high field (18.8 T, 800 MHz for H-1) is reported; further, it is shown that it is possible by Al-27 MAS and MQMAS measurements to clearly identify four separate aluminium environments characteristic of these materials and to unambiguously assign their coordinations.
URL<Go to ISI>://000088914800008