Dependence of volume expansion on alkyl chain length and the existence of branched methyl group of CO2-expanded ketone systems at 40 °c

Tsutomu Aida, Takafumi Aizawa, Mitsuhiro Kanakubo, Hiroshi Nanjo

研究成果: Article査読

21 被引用数 (Scopus)

抄録

We measured the density and liquid-phase CO2 mole fraction of CO2-expanded ketones (acetone, methyl ethyl ketone, methyl propyl ketone, methyl butyl ketone, methyl i-propyl ketone, and t-methyl butyl ketone) at 40 °C and evaluated the expansion coefficient on the basis of the experimental results. Volume expansion was slow in the region of a low carbon dioxide mole fraction (<0.7) but rapid in the region of a high carbon dioxide mole fraction (>0.7). The dependence of the expansion coefficient on the carbon dioxide mole fraction could be attributed to the number of molecules in a certain volume. These phenomena were inferred from the partial molar volume estimated using the Peng-Robinson equation of state (PR-EOS).

本文言語English
ページ(範囲)71-76
ページ数6
ジャーナルJournal of Supercritical Fluids
55
1
DOI
出版ステータスPublished - 2010 11
外部発表はい

ASJC Scopus subject areas

  • 化学工学(全般)
  • 凝縮系物理学
  • 物理化学および理論化学

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