Phase equilibrium for structure II clathrate hydrates formed with (fluoromethane + propan-2-ol, 2-methyl-2-propanol, or 2-propanone)

Masatoshi Imai, Yuya Oto, Shinnosuke Nitta, Satoshi Takeya, Ryo Ohmura

研究成果: Article査読

4 被引用数 (Scopus)

抄録

This paper presents phase-equilibrium pressure-temperature data for the clathrate hydrates formed in the three component systems each consisting of a hydrate-forming gas, a water-soluble freezing-point depression material, and water. These systems are {fluoromethane (CH 3F) + propan-2-ol + water}, (fluoromethane + 2-methyl-2-propanol + water), and (fluoromethane + 2-propanone + water). The mole ratio of water and the water-soluble material (papan-2-ol, 2-methyl-2-propanol, or 2-propanone) was 17:1. The temperature range over which the phase-equilibrium measurements were performed extended to 267.6 K on the lower side and 295.8 K on the higher side. The phase-equilibrium pressures in these three systems were found to be lower than that in the binary (fluoromethane + water) system at a given system temperature. The crystallographic structure of the hydrates formed in the systems with 2-methyl-2-propanol and 2-propanone was determined to be structure II based on the powder X-ray diffraction measurements.

本文言語English
ページ(範囲)17-20
ページ数4
ジャーナルJournal of Chemical Thermodynamics
47
DOI
出版ステータスPublished - 2012 4 1

ASJC Scopus subject areas

  • 原子分子物理学および光学
  • 材料科学(全般)
  • 物理化学および理論化学

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