Experimental measurements of carbon dioxide solubility in aqueous tetra-n-butylammonium bromide solutions

Sanehiro Muromachi, Atsushi Shijima, Hiroyuki Miyamoto, Ryo Ohmura

研究成果: Article査読

14 被引用数 (Scopus)

抄録

In this paper, we report the absolute measurements of CO2 solubility in aqueous tetra-n-butylammonium bromide (TBAB) solution. The measurement range was 0.2 MPa < P < 4 MPa, 286.15 K < T < 298.15 K, with 0 (pure water) < wTBAB < 0.4, where P, T, and wTBAB denote the pressure, temperature, and mass fraction of TBAB in the aqueous feed solutions, respectively. These thermodynamic conditions are outside the hydrate formation region. We evaluated salting-in and -out effects based on the experimental data, and confirmed that the CO2 salting-out effect of TBAB clearly appeared at T = 292 K with wTBAB < 0.32 and the salting-in effect may exist for P > 3 MPa and T > 292 K with wTBAB ≤ 0.4 mass fraction of TBAB.

本文言語English
ページ(範囲)94-100
ページ数7
ジャーナルJournal of Chemical Thermodynamics
85
DOI
出版ステータスPublished - 2015 6

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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