High-pressure phase equilibria with compressed gases

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Issue Date
2007Author
Ren, Wei
Scurto, Aaron M.
Publisher
American Institute of Physics
Type
Article
Article Version
Scholarly/refereed, publisher version
Metadata
Show full item recordAbstract
An apparatus is described that is capable of determining high-pressure vapor-liquid equilibrium, liquid-liquid equilibrium, solid-liquid-vapor equilibrium, vapor-liquid-liquid equilibrium, and mixture critical points and transitions. The device is capable of temperatures to 150°C and pressures to 300bars (higher with slight modifications). The construction and operation are described in detail and do not require the use of mercury. This method requires very low sample volumes and no analytical equipment nor system-specific calibration. The apparatus was verified by comparison with literature data for the decane-CO2 mixture and CO2-ionic liquid [1-hexyl-3-methyl-imidazolium bis(trifyl)imide)] systems. The experimental data have excellent agreement with the literature data that used different experimental methods. A rigorous error analysis of the system is also presented.
Description
This is the published version. Copyright 2007 American Institute of Physics.
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Citation
Ren, Wei, and Aaron M. Scurto. "High-pressure Phase Equilibria with Compressed Gases." Rev. Sci. Instrum. Review of Scientific Instruments 78.12 (2007): 125104. http://dx.doi.org/10.1063/1.2814025
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