Study on wettability of coal. Study on methanol coal mixture. II.

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  • 石炭のぬれ性に関する研究　　メタコールに関する研究　ＩＩ
  • Study on Methanol Coal Mixture (II)
  • メタコールに関する研究 (II)

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Wettabilities of five kinds of original coals and of coals extracted with methanol have been studied in terms of a critical wetting concentration and a heat of wet-ting.<BR>The critical wetting concentration of original coal in methanol/water mixtures, which is obtained from wetting rates, decreased with increase in the carbon content. The heats of wetting for original coals in methanol and/or in water decreased as carbon content in-creased up to C85.2% (Miike), and beyond the point it remained constant. The changes of the heats of wetting with volume ratio of methanol/water mixtures were dependent on various ranks of original coal.<BR>From these results, it was found that the wettabilities of original coals in methanol, water, and methanol/water mixtures were influenced by surface-chemical structures of coals, especially, by surface acidic functional groups of coals. Moreover, surface-chemical structures for low ranks of coals were found to be different between the original coals and the coals extracted with methanol.

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Details 詳細情報について

  • CRID
    1390001204296497920
  • NII Article ID
    130004016669
  • DOI
    10.3775/jie.65.341
  • COI
    1:CAS:528:DyaL2sXnt1Gk
  • ISSN
    2185226X
    03693775
    http://id.crossref.org/issn/03693775
  • Text Lang
    ja
  • Data Source
    • JaLC
    • Crossref
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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