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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    11 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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