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    Contents of O-containing functional groups in coals by 13C NMR analysis

    Access Status
    Fulltext not available
    Authors
    Wang, Y.
    Zhou, J.
    Chen, Y.
    Hu, X.
    Zhang, Shu
    Lin, X.
    Date
    2013
    Type
    Journal Article
    
    Metadata
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    Citation
    Wang, Y. and Zhou, J. and Chen, Y. and Hu, X. and Zhang, S. and Lin, X. 2013. Contents of O-containing functional groups in coals by 13C NMR analysis. Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology. 41 (12): pp. 1422-1426.
    Source Title
    Ranliao Huaxue Xuebao/Journal of Fuel Chemistry and Technology
    ISSN
    0253-2409
    School
    Fuels and Energy Technology Institute
    URI
    http://hdl.handle.net/20.500.11937/55769
    Collection
    • Curtin Research Publications
    Abstract

    The solid state high resolution 13 C CP/MAS NMR technology was employed to analyze O-containing functional groups in 4 coals. The variation and contents of inactive O-containing functional groups in the coals were obtained in combination with chemical method. The results show that the 13 C CP/MAS NMR method is effective to obtain the contents of some O-containing functional groups. The contents of carboxyl and carbonyl in the low rank coal are from 0.00 to 1.41 and from 0.45 to 1.91 mol/kg, respectively. Combined with chemical method, the content of ether bond is obtained, which is from 5.33 to 10.54 mol/kg. However, the value of inactive ether bond in the coals is only from 0.04 to 0.13 mol/kg, and the occurrence of the ether bond is predominantly inactive, few of them exists in high rank coal.

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