/sup 29/Si NMR study of dehydrated/rehydrated silica gel using cross polarization and magic-angle spinning

Journal Article · Tue Mar 22 23:00:00 EST 1983 · J. Am. Chem. Soc.; (United States)

DOI:https://doi.org/10.1021/ja00344a012· OSTI ID:5556454

Sindorf, D W; Maciel, G E

A /sup 29/Si NMR study was carried out on silica gel, using cross polarization and magic-angle spinning (CP/MAS). Spectra were examined on silica samples prepared at various stages of dehydration. It was found that the spectral changes observed in these experiments could not be accounted for by a single structural model of the types that have been advanced previously for silica surfaces. However, these /sup 29/Si spectral features are consistent with a heterogeneous silica surface consisting of separate regions resembling the 100 face and 111 face of ..beta..-cristobalite.

• Research Organization: Colorado State Univ., Fort Collins
• OSTI ID: 5556454
• Journal Information: J. Am. Chem. Soc.; (United States), Journal Name: J. Am. Chem. Soc.; (United States) Vol. 105:6; ISSN JACSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ADSORBENTS
CHALCOGENIDES
CRISTOBALITE
DEHYDRATION
EVEN-ODD NUCLEI
ISOTOPES
LIGHT NUCLEI
MAGNETIC RESONANCE
MINERALS
NUCLEAR MAGNETIC RESONANCE
NUCLEI
ORIENTATION
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
POLARIZATION
RESONANCE
SILICA GEL
SILICON 29
SILICON COMPOUNDS
SILICON ISOTOPES
SILICON OXIDES
SPECTRAL RESPONSE
SPIN ORIENTATION
STABLE ISOTOPES