Phase equilibrium for structure H hydrates formed with methane plus cycloheptane, cycloheptanone, or oxacycloheptane

Takahiro Kozaki, Tatsuhiko Taguchi, Satoshi Takeya, Ryo Ohmura

研究成果: Article

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Pressure and temperature conditions for the four-phase equilibrium in systems that include liquid water, structure H hydrate, methane gas, and liquid hydrocarbon substances (cycloheptane, cycloheptanone, or oxacycloheptane) were measured over the temperature range (273.5 to 284.1) K. The measurements indicate that, at 274 K, the equilibrium pressures of the systems with cycloheptane, cycloheptanone, and oxacycloheptane were lower by (1.6, 1.3, and 1.5) MPa, respectively, than those of the structure I methane hydrates in equilibrium with liquid water and methane vapor. Powder X-ray diffraction measurements of the formed hydrate samples confirmed structure H hydrates.

元の言語English
ページ(範囲)3059-3062
ページ数4
ジャーナルJournal of Chemical and Engineering Data
55
発行部数9
DOI
出版物ステータスPublished - 2010 9 9

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)

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