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First evidence of multiple octahedral Al sites in Na-montmorillonite by 27Al multiple quantum MAS NMR

✍ Scribed by Takahashi, Takafumi; Kanehashi, Koji; Saito, Koji


Book ID
121371102
Publisher
GeoScienceWorld
Year
2008
Tongue
English
Weight
411 KB
Volume
56
Category
Article
ISSN
0009-8604

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Al 3Q MAS NMR spectroscopy has been applied to study small amount of pentacoordinated Al emerges. The majority of the signal, however, arises from distorted tetrahedral Al. the coordination state of the species giving the 30 ppm Al NMR signal in the 27 Al MAS NMR spectrum of activated A two-step cal