The partial 1H NMR spectra of AlOH and molecular H2O in hydrous aluminosilicate glasses: Component-Resolved analysis of 27Al1H cross polarization and 1H spin-echo MAS NMR spectra

Wim J. Malfait, Xianyu Xue

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10 Citations (Scopus)

Abstract

The Component-Resolved methodology was applied to 1H spin-echoand 27Al-1H cross polarization(CP) MAS NMR data of aluminosilicate glasses. The method was able to resolve two components with different T2 relaxation rates, hydroxyl groups(OH)and molecular water(H 2Omol), from the spin-echo data and to determine partial spectra and the relative abundances of OH and H2Omol. The algorithm resolved two to three components with different 27Al- 1H CP dynamics from the 27Al-1H cross polarization data; the obtained partial NMR spectra for Al-OH are in excellent agreement with those obtained previously from the difference spectra between spectra with various contact times and confirm previous quantitative results and models for the Al-OH,Si-OH and H2Omol speciation(Malfait and Xue, 2010).

Original languageEnglish
Pages (from-to)60-68
Number of pages9
JournalSolid State Nuclear Magnetic Resonance
Volume37
Issue number3-4
DOIs
Publication statusPublished - May 2010

Keywords

  • Algorithm
  • Aluminosilicate glasses
  • CORE
  • Cross polarization
  • NMR spectroscopy
  • Quantification
  • Spin-echo
  • Water speciation

ASJC Scopus subject areas

  • Radiation
  • Chemistry(all)
  • Nuclear and High Energy Physics
  • Instrumentation

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