Interfacial tension measurements in the (CO2 + H2) gas mixture and water system at temperatures from 271.2 K to 280.2 K and pressures up to 7.0 MPa

Kazuki Fukuzawa, Kosuke Watanabe, Keita Yasuda, Ryo Ohmura

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

This paper reports the experimental values of the interfacial tension between a gas mixture (CO2 + H2) and water measured with the pendant drop method. The measurements were conducted for temperatures from 271.2 K to 280.2 K and pressures up to 7.0 MPa, at increments of 1 MPa. These temperature-pressure ranges were nearly close to the (CO2 + H2) hydrate-stability-zone but each result is obtained without existence of any hydrate. The temperature dependency of the interfacial tension in this system could not be observed, but the interfacial tension decreased almost linearly with increasing pressure, indicating that the observed decrease was caused by an increase in adsorption of the gas phase onto the liquid water with pressure. The gradient of the interfacial tension, with respect to the pressure, was confirmed to be determined by the gas phase composition. The interaction between gases has a marginal influence on the interfacial tension between the (CO2 + H2) gas mixture and water.

Original languageEnglish
Pages (from-to)20-25
Number of pages6
JournalJournal of Chemical Thermodynamics
Volume119
DOIs
Publication statusPublished - 2018 Apr 1

Fingerprint

Gas mixtures
gas mixtures
Surface tension
interfacial tension
Water
water
Gases
Hydrates
hydrates
Temperature
temperature
vapor phases
Phase composition
Adsorption
gradients
adsorption
Liquids
liquids
gases
interactions

Keywords

  • Clathrate hydrate
  • CO
  • H
  • IGCC
  • Interfacial tension

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Physical and Theoretical Chemistry

Cite this

Interfacial tension measurements in the (CO2 + H2) gas mixture and water system at temperatures from 271.2 K to 280.2 K and pressures up to 7.0 MPa. / Fukuzawa, Kazuki; Watanabe, Kosuke; Yasuda, Keita; Ohmura, Ryo.

In: Journal of Chemical Thermodynamics, Vol. 119, 01.04.2018, p. 20-25.

Research output: Contribution to journalArticle

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N2 - This paper reports the experimental values of the interfacial tension between a gas mixture (CO2 + H2) and water measured with the pendant drop method. The measurements were conducted for temperatures from 271.2 K to 280.2 K and pressures up to 7.0 MPa, at increments of 1 MPa. These temperature-pressure ranges were nearly close to the (CO2 + H2) hydrate-stability-zone but each result is obtained without existence of any hydrate. The temperature dependency of the interfacial tension in this system could not be observed, but the interfacial tension decreased almost linearly with increasing pressure, indicating that the observed decrease was caused by an increase in adsorption of the gas phase onto the liquid water with pressure. The gradient of the interfacial tension, with respect to the pressure, was confirmed to be determined by the gas phase composition. The interaction between gases has a marginal influence on the interfacial tension between the (CO2 + H2) gas mixture and water.

AB - This paper reports the experimental values of the interfacial tension between a gas mixture (CO2 + H2) and water measured with the pendant drop method. The measurements were conducted for temperatures from 271.2 K to 280.2 K and pressures up to 7.0 MPa, at increments of 1 MPa. These temperature-pressure ranges were nearly close to the (CO2 + H2) hydrate-stability-zone but each result is obtained without existence of any hydrate. The temperature dependency of the interfacial tension in this system could not be observed, but the interfacial tension decreased almost linearly with increasing pressure, indicating that the observed decrease was caused by an increase in adsorption of the gas phase onto the liquid water with pressure. The gradient of the interfacial tension, with respect to the pressure, was confirmed to be determined by the gas phase composition. The interaction between gases has a marginal influence on the interfacial tension between the (CO2 + H2) gas mixture and water.

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