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査読

61 被引用数 (Scopus)

抄録

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.

本文言語English
ページ(範囲)25-28
ページ数4
ジャーナルFluid Phase Equilibria
317
DOI
出版ステータスPublished - 2012 3月 15

ASJC Scopus subject areas

  • 化学工学(全般)
  • 物理学および天文学(全般)
  • 物理化学および理論化学

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