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Structure Analysis of Coals by Resolution Enhanced Solid State 13C NMR Spectroscopy

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Atomic and Nuclear Methods in Fossil Energy Research

Abstract

Solid state 13C nmr spectroscopy employing the experimental techniques of dipolar decoupling,2,3 magic angle spinning4,5 and 1H-13C cross polarization3 (CP/MAS-13C nmr spectroscopy) yields spectra which approach solution 13C-FT-nmr spectra in resolution and sensitivity. Resonance linewidths of 10–50 Hz in discrete organic substances are typical. Those in amorphous solids and glassy polymers generally are degraded to 50–150 Hz (2–6 ppm at 2.35T) by chemical shift dispersion and/or residual dipolar broadening.5–10 In homogeneous systems, this level of resolution permits the measurement of isotropic chemical shift and relaxation time parameters in solids.

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Authors and Affiliations

  1. Chemistry Division, Oak Ridge National Laboratory, Oak Ridge, Tennessee, 37830, USA

    Edward W. Hagaman & M. C. Woody

Authors
  1. Edward W. Hagaman
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  2. M. C. Woody
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Editor information

Editors and Affiliations

  1. Nuclear Radiation Center, Washington State University, Pullman, Washington, USA

    Royston H. Filby

  2. National Bureau of Standards, Washington, D.C, USA

    B. Stephen Carpenter

  3. Lawrence Livermore National Laboratory, Livermore, California, USA

    Richard C. Ragaini

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© 1982 Plenum Press, New York

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Hagaman, E.W., Woody, M.C. (1982). Structure Analysis of Coals by Resolution Enhanced Solid State 13C NMR Spectroscopy. In: Filby, R.H., Carpenter, B.S., Ragaini, R.C. (eds) Atomic and Nuclear Methods in Fossil Energy Research. Springer, Boston, MA. https://doi.org/10.1007/978-1-4684-4133-8_24

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  • DOI: https://doi.org/10.1007/978-1-4684-4133-8_24

  • Publisher Name: Springer, Boston, MA

  • Print ISBN: 978-1-4684-4135-2

  • Online ISBN: 978-1-4684-4133-8

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