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Characterization of Synthetic and Naturally Occurring Clays by 27 Al and 29 Si Magic‐Angle Spinning NMR Spectroscopy
Author(s) -
Komarneni Sridhar,
Fyfe Colin A.,
Kennedy Gordon J.,
Strobl Harold
Publication year - 1986
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1986.tb07433.x
Subject(s) - saponite , magic angle spinning , spectroscopy , nuclear magnetic resonance spectroscopy , montmorillonite , materials science , magic angle , characterization (materials science) , mica , spinning , nuclear magnetic resonance , composite material , nanotechnology , physics , quantum mechanics
Magic‐angle spinning nuclear magnetic resonance (MASNMR) spectroscopy ( 27 Al) detected the coordination of Al in clays containing as little as 0.26% Al 2 O 3 . The 29 Si MASNMR of fluorphlogopite showed three distinct Si chemical environments which suggested short‐range ordering. Synthetic laponite and mica‐montmorillonite showed broad 29 Si resonances indicative of short‐range disorder. A saponite showed four 29 Si resonances. Considerable insight into the short‐range ordering of clays can be gained by 27 Al and 29 Si MASNMR.