Thermodynamic properties of ionic semiclathrate hydrate formed with tetrabutylphosphonium bromide

Takuya Suginaka, Hiroki Sakamoto, Kento Iino, Satoshi Takeya, Masahiro Nakajima, Ryo Ohmura

研究成果: Article

46 引用 (Scopus)

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This paper reports an experimental study to measure the thermodynamic properties of ionic semiclathrate hydrate formed with tetrabutylphosphonium bromide. The thermodynamic measurements were performed on the temperature-composition phase diagram of the hydrate in the range of the mass fraction of tetrabutylphosphonium bromide w TBPB from 0.10 to 0.50 and the hydrate dissociation enthalpy, where w TBPB denotes the mass fraction of tetrabutylphosphonium bromide. The highest equilibrium temperature for tetrabutylphosphonium bromide hydrate was 282.4K at 0.33≤w TBPB≤0.35. Dissociation enthalpy was measured to be 214kJ/kg at w TBPB=0.35 with a differential scanning calorimetry. An attempt was made to determine the crystallographic structure of the tetrabutylphosphonium bromide hydrate by single-crystal X-ray diffraction measurements.

元の言語English
ページ(範囲)25-28
ページ数4
ジャーナルFluid Phase Equilibria
317
DOI
出版物ステータスPublished - 2012 3 15

ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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