Chinese Journal of Magnetic Resonance ›› 1991, Vol. 8 ›› Issue (1): 81-88.

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CARBON-13 NMR SPECTRA OF COALS AT HIGH MAGNETIC FIELD+

Hu Jianzhi1, Ye Chaohui1, Chen Deyu2   

  1. 1. Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics, Academia Sinica, Wuhan 430071;
    2. Laboratory of Organic Geochemistry, Institute of Geochemistry, Academia Sciences, Guanzhou 510640
  • Received:1990-05-05 Revised:1990-07-24 Published:1991-03-05 Online:2018-01-20
  • Supported by:
    This work was supported by the National Natural Science Foundation of China.

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Abstract: The aromaticities (fa) of coals measured at high magnetic field via static 13C CP spectra are consistent with those measured at low field by means of high resolution 13C CPMAS. Therefore, the demand for fast sample spining was avoided while high NMR detective sensitivity was maintained at high field.

Key words: NMR of coals, Aromaticity of coals

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