Preliminary Characterization of Gel Precursors and Their High‐Temperature Products by 27Al Magic‐Angle Spinning NMR

Sridhar Komarneni, Rustum Roy, Colin A. Fyfe, Gordon J. Kennedy

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

The environment of the Al atom in alumina gels, single‐phase and diphasic mullite gels, and their transformation products was studied by 27Al magic‐angle spinning nuclear magnetic resonance (MASNMR). Alumina gels made from inorganic and organic precursors showed exactly the same 27Al MASNMR spectra. Heat treatment of gels at 500°C caused artial conversion of octahedral Al to tetrahedral Al. The Al in single‐phase mullite gel appears to be highly ordered compared to that in diphasic mullite gel.

Original languageEnglish (US)
Pages (from-to)C‐243-C‐245
JournalJournal of the American Ceramic Society
Volume68
Issue number9
DOIs
StatePublished - 1985

Fingerprint

Gels
Nuclear magnetic resonance
Mullite
Aluminum Oxide
Alumina
Heat treatment
Atoms
aluminosilicate

All Science Journal Classification (ASJC) codes

  • Ceramics and Composites
  • Materials Chemistry

Cite this

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title = "Preliminary Characterization of Gel Precursors and Their High‐Temperature Products by 27Al Magic‐Angle Spinning NMR",
abstract = "The environment of the Al atom in alumina gels, single‐phase and diphasic mullite gels, and their transformation products was studied by 27Al magic‐angle spinning nuclear magnetic resonance (MASNMR). Alumina gels made from inorganic and organic precursors showed exactly the same 27Al MASNMR spectra. Heat treatment of gels at 500°C caused artial conversion of octahedral Al to tetrahedral Al. The Al in single‐phase mullite gel appears to be highly ordered compared to that in diphasic mullite gel.",
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Preliminary Characterization of Gel Precursors and Their High‐Temperature Products by 27Al Magic‐Angle Spinning NMR. / Komarneni, Sridhar; Roy, Rustum; Fyfe, Colin A.; Kennedy, Gordon J.

In: Journal of the American Ceramic Society, Vol. 68, No. 9, 1985, p. C‐243-C‐245.

Research output: Contribution to journalArticle

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T1 - Preliminary Characterization of Gel Precursors and Their High‐Temperature Products by 27Al Magic‐Angle Spinning NMR

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