Phase equilibria for the mixtures of supercritical methanol + C18 methyl esters and supercritical methanol + α-tocopherol

Tao Fang, Yusuke Shimoyama, Toshio Abeta, Yoshio Iwai, Mitsuru Sasaki, Motonobu Goto

研究成果: ジャーナルへの寄稿学術誌査読

34 被引用数 (Scopus)

抄録

Phase equilibrium data for methanol + C18 methyl esters and methanol + α-tocopherol were measured at 523-573 K in the pressure ranges of 2.45-11.45 MPa for C18 methyl esters and 3.19-15.02 MPa for α-tocopherol, respectively. The measured data were correlated using Peng-Robinson equation of state (PR EOS) with conventional mixing rules. The distribution coefficients of C18 methyl esters and α-tocopherol in methanol were discussed. The data illustrate that when the pressure is lower than the critical pressure of methanol (8.097 MPa), the mole fractions of methanol in vapor are very close to unity for both systems. When the pressure increased over 8 MPa, the distribution coefficients increased significantly for C18 methyl esters at 548-573 K and for α-tocopherol at 573 K. Noticeably, this work firstly reports the phase equilibrium data of C18 methyl esters in methanol at high temperatures and pressures.

本文言語英語
ページ(範囲)140-146
ページ数7
ジャーナルJournal of Supercritical Fluids
47
2
DOI
出版ステータス出版済み - 12月 2008

!!!All Science Journal Classification (ASJC) codes

  • 化学工学一般
  • 凝縮系物理学
  • 物理化学および理論化学

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