Hydrogen component fugacities in binary mixtures with carbon dioxide: Pressure dependence

  • Bruno T
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Abstract

The fugacity coeffs. of H in binary mixts. with CO2 were measured isothermally by using a phys. equil. technique. This technique involves the use of an exptl. chamber which is divided into 2 regions by a semipermeable membrane. Hydrogen can penetrate and pass through the membrane, while CO2 cannot. During the approach to equil., the pressure of pure H on one side of the membrane approaches the partial pressure H in the mixt. on the other side of the membrane. This allows a direct measurement of the H component fugacity at a given mixt. mol fraction. Measurements were made on H-CO2 at 130 Deg with total mixt. pressure 3.45-13.79 MPa. General trends in the exptl. results are discussed, and comparisons are made with predictions from the Redlich-Kwong, Peng-Robinson, and extended corresponding-states models.

Author-supplied keywords

  • carbon dioxide
  • fugacity
  • high pressure
  • hydrogen
  • hydrogen + carbon dioxide binary system
  • mixtures

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