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A silicon-29 NMR study of the structural intermediates in low pH sol-gel reactions

  • L. W. Kelts (a1) and N. J. Armstrong (a1)
  • DOI:
  • Published online: 01 January 2011

Silicon-29 NMR is used to study the structural intermediates in tetramethyl and tetraethyl orthosilicate (TMOS and TEOS) low pH sol-gel reactions. Differences in the number of compact ring structures are related to differences in gel times. Reactions are followed at various silicon: water: acid molar ratios.

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Journal of Materials Research
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