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Study of the Constitutive Superficial Water of Precipitated Amorphous Silicas using 1 H NMR: Broad-Line at 4 K and HR MAS at 300 K

✍ Scribed by Dorémieux-Morin, C.; Heeribout, L.; Dumousseaux, C.; Fraissard, J.; Hommel, H.; Legrand, A. P.


Book ID
120344916
Publisher
American Chemical Society
Year
1996
Tongue
English
Weight
137 KB
Volume
118
Category
Article
ISSN
0002-7863

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The acidity of niobium pentoxide calcined at 573 K has been studied by interacting water molecules and the solid acid using 'H broad-line NMR at 4 K and MAS NMR at room temperature. 'H Broad-line NMR in 'rigid lattice' conditions allows the determination of the numbers of the oxygen-protonated speci