Control of Reversible Reactions in Supercritical Water: I. Alkylations

Takafumi Sato, Gaku Sekiguchi, Tadafumi Adschiri, Kunio Arai

研究成果: Article査読

16 被引用数 (Scopus)

抄録

The reaction rates of alkylation of phenol and that of dealkylation of alkylphenol were evaluated in sub- and supercritical water. Dehydration of 2-propanol gave propene, and then alkylation with phenol, which produced 2-isopropylphenol. Then 2-propylphenol was formed by rearrangement of 2-isopropylphenol. The alkylation rate was higher than the dealkylation rate, as water density increased and temperature decreased at 613-713 K and 0.3-0.6 g/cm3 of water density. At around 673 K, the order of magnitude of the alkylation and dealkylation rates reversed and become sensitive to the system temperature and density. These results demonstrate some of the specific features of supercritical water: the reaction rate of both forward and reverse reactions, such as alkylation and dealkylations, can be controlled through manipulation of temperature and density (pressure).

本文言語English
ページ(範囲)665-672
ページ数8
ジャーナルAIChE Journal
50
3
DOI
出版ステータスPublished - 2004 3

ASJC Scopus subject areas

  • バイオテクノロジー
  • 環境工学
  • 化学工学(全般)

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