Flow-through electrochemical cell for pH measurement of organic acid aqueous solutions at subcritical and supercritical conditions

Kiwamu Sue, Kenji Murata, Yuuki Matsuura, Masayuki Tsukagoshi, Tadafumi Adschiri, Kunio Arai

研究成果: Article査読

30 被引用数 (Scopus)

抄録

The pH of aqueous phenol solutions at subcritical and supercritical conditions was measured for the first time at temperatures from 296.4 to 673.4K and pressures from 29.8 to 34.9MPa by using a flow-through electrochemical cell. From the results, we determined the equilibrium constant for the dissociation reaction of phenol (KPhOH). The dissociation constants of phenol varied from 1.0×10-12mol/kg at 673.4K and 30.2MPa to 7.9×10-10mol/kg at 473.1K and 29.9MPa. The semi-empirical model for correlation of the equilibrium constant in subcritical and supercritical water was applied to correlate the data and to discuss the temperature, pressure and density effects on the phenol dissociation constant.

本文言語English
ページ(範囲)1097-1106
ページ数10
ジャーナルFluid Phase Equilibria
194
197
DOI
出版ステータスPublished - 2002 3 30

ASJC Scopus subject areas

  • 化学工学(全般)
  • 物理学および天文学(全般)
  • 物理化学および理論化学

フィンガープリント

「Flow-through electrochemical cell for pH measurement of organic acid aqueous solutions at subcritical and supercritical conditions」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル