Measurement and correlation of excess molar enthalpies for the systems containing supercritical carbon dioxide and alcohols

  • Ochi K
  • Dai W
  • Wada Y
 et al. 
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Abstract

The excess molar enthalpies (H E ) of carbon dioxide+isobutyl alcohol, and carbon dioxide+(ethanol+water) systems were measured in the supercritical region of carbon dioxide over the entire composition range at 308.15K and at pressures from 7.5 to 8.5MPa using a flow-type isothermal microcalorimeter. A strong dependence of H E on pressure at this area was observed. The correlation of the excess molar enthalpies was made using a composition-dependent equation composed of two polynomial expressions. © 2002 Elsevier Science B.V. All rights reserved.

Author-supplied keywords

  • Correlation
  • Excess molar enthalpies
  • High-pressure
  • Measurement
  • Supercritical carbon dioxide

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Authors

  • K. Ochi

  • W. Dai

  • Y. Wada

  • H. Hayashi

  • K. Kurihara

  • K. Kojima

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