6.溶剤分別法による褐炭抽出物のフラクショネーションとキャラクタリゼーション

DOI

書誌事項

タイトル別名
  • 6. Solvent fractionation of brown coal extract and characterization of the fractions

説明

We have previously presented a new coal extraction method which brings coal into contact with a flowing stream of non-polar solvent such as tetralin or 1-methylnaphthalene under 10MPa at 350℃. Furthermore, we presented a new coal fractionation method based on the extraction method and showed that bituminous coals could be separated into several fractions having different molecular mass without decomposing coal. When the fractionation method was applied to the fractionation of brown coal, however, properties of the fractions obtained were almost the same. This suggested that thermal extraction does not work for the fractionation of brown coal. In this study we present a solvent fractionation method instead of the thermal fractionation as a way to fractionate brown coal extract into fractions having different properties. Solid extracts prepared through hydrothermal extraction at 300 and 350℃ were separated by the solvent fractionation using n-hexane, cyclohexane, toluene, and methanol. Detailed characterization of the fractions obtained showed that the brown coal extract could successfully be separated into fractions having significantly different chemical structures.

収録刊行物

詳細情報 詳細情報について

  • CRID
    1390282680746070912
  • NII論文ID
    110006857863
  • DOI
    10.20550/jiesekitanronbun.43.0_13
  • ISSN
    24238309
    24238295
  • 本文言語コード
    ja
  • データソース種別
    • JaLC
    • CiNii Articles
  • 抄録ライセンスフラグ
    使用不可

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