Conversion of lignin with supercritical water-phenol mixtures

Motofumi Saisu, Takafumi Sato, Masaru Watanabe, Tadafumi Adschiri, Kunio Arai

研究成果: Article査読

282 被引用数 (Scopus)

抄録

The decomposition of lignin was examined in supercritical water with and without phenol at 673 K. In the absence of phenol, the yield of tetrahydrofuran (THF)-insoluble (TIS) products decreased and the molecular weight distribution of THF-soluble (TS) products shifted toward lower molecular weights as the water density increased. The increase in water density enhanced the lignin conversion. In the presence of phenol, the yield of TIS products was lower and the molecular weight distribution of TS products shifted toward lower molecular weights than those in the absence of phenol. Some alkylphenols were obtained only in the presence of phenols, because of the reaction of phenol with the decomposition products. These results show that the reaction of phenol with reactive sites occurred in supercritical water and suppressed cross-linking reactions among reactive sites of large fragments. This promoted the decomposition of lignin to lower-molecular-weight compounds.

本文言語English
ページ(範囲)922-928
ページ数7
ジャーナルEnergy and Fuels
17
4
DOI
出版ステータスPublished - 2003 7月 1

ASJC Scopus subject areas

  • 化学工学(全般)
  • 燃料技術
  • エネルギー工学および電力技術

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