Phase equilibria and diffusion behavior of high pressure CO 2 in tetra-n-heptyl ammonium bromide
The Journal of Supercritical Fluids(2016)
Abstract
•Various phase equilibria of the [thepAm][Br]–CO2 system was measured and modeled.•[thepAm][Br] shows the highest CO2 solubility among the reported after around 10MPa.•A D(c) model was proposed for CO2 absorption in [thepAm][Br] at high pressure.•The diffusivity of CO2 in [thepAm][Br] is very pressure dependent.
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Key words
Tetra-n-heptyl ammonium bromide,Carbon dioxide,Solid–liquid–gas equilibrium,Solubility,Diffusion model,High pressure
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