Clathrate hydrate formed with methane and 2-propanol: Confirmation of structure II hydrate formation

Ryo Ohmura, Satoshi Takeya, Tsutomu Uchida, Takao Ebinuma

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This paper reports confirmation of structure II hydrate formation in a methane-2-propanol-water system, which was previously suggested by Østergaard et al. (Ind. Eng. Chem. Res. 2002, 41, 2064-2068) based on a comparison of the phase-equilibrium data with corresponding statistical- thermodynamics predictions. A hydrate crystal sample was prepared with a 16.4 mass % aqueous solution of 2-propanol pressurized with methane and then subjected to a powder X-ray diffraction analysis. The X-ray diffraction pattern thus obtained from the sample indicated that the crystallographic structure of the hydrate was structure II. The pressure-temperature data for aqueous liquid-hydrate-methane-rich vapor three-phase equilibrium in a temperature range from T = 273 to 283 K are also reported.

Original languageEnglish
Pages (from-to)4964-4966
Number of pages3
JournalIndustrial and Engineering Chemistry Research
Issue number16
Publication statusPublished - 2004 Aug 4


ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

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