OBSERVATION OF TWO 4-COORDINATED AL SITES IN MONTMORILLONITE USING HIGH MAGNETIC FIELD STRENGTH 27AL MQMAS NMR

dc.contributor.author	Ohkubo T.
dc.contributor.author	Ikeda Y.
dc.contributor.author	Kanehashi K.
dc.contributor.author	Saito K.
dc.date.accessioned	2021-12-18T07:26:45Z
dc.date.available	2021-12-18T07:26:45Z
dc.date.issued	2003
dc.identifier	https://www.elibrary.ru/item.asp?id=31232445
dc.identifier.citation	Clays and Clay Minerals, 2003, 51, 5, 513-518
dc.identifier.issn	0009-8604
dc.identifier.uri	https://repository.geologyscience.ru/handle/123456789/33559
dc.description.abstract	Analyses of the layer structure of Na-montmorillonite have been performed using 27Al MAS and 27Al MQMAS NMR techniques. Results of 27Al MAS NMR measurements at higher magnetic field strength (16.4 T) suggest that the 4-coordinated Al site in Na-montmorillonite has two different structures. This was confirmed by the fact that two peaks corresponding to 4-coordinated Al are observed in the 27Al MQMAS NMR at high magnetic field strength. The ratio of two 4-coordinated Al sites was found to be affected by water in the interlayer space because the area ratio of cross peaks corresponding to two 4-coordinated Al sites changes with the water content.
dc.title	OBSERVATION OF TWO 4-COORDINATED AL SITES IN MONTMORILLONITE USING HIGH MAGNETIC FIELD STRENGTH 27AL MQMAS NMR
dc.type	Статья

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