Thermodynamics of binary mixtures 1-ethoxy-1,1,2,2,3,3,4,4,4-nonafluorobutane (HFE-7200) + 2-propanol: High pressure density, speed of sound and derivative properties
The Journal of Chemical Thermodynamics, ISSN: 0021-9614, Vol: 131, Page: 630-647
2019
- 12Citations
- 8Captures
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Article Description
Awareness about environmental impact of greenhouse gas emissions has lead to search for other alternatives which can cover the same utility range of wellknown CFCs, HCFCs and PFCs but without their undesirable effects on the planet. Since Hydrofluoroether fluids (HFEs) have emerged as a good alternative, it is necessary to characterize their thermophysical properties in order to bring reliable data to the industry. Density and speed of sound are two of the most important physical properties because of the amount of information that they provide in the design of the machinery involved in the utilization of these fluids as well as data for the parametrization of equations of state. This paper reports a set of new data concerning high pressure density, ρ, for the binary mixture x HFE-7200 + (1 − x ) 2-propanol in a broad range of pressures (0.1–140 MPa), and at several temperatures (from 293.15 to 393.15 K). Density values were correlated by employing a Tait-like equation in the same p, T ranges, and the derivative properties, that is, the isothermal compressibility κT, and the isobaric expansion αP, were determined. Excess molar volumes VE, which bring information about the change in volume observed in the mixture were also calculated for the eight mole fractions investigated. Speeds of sound, c, at 0.1 MPa were measured experimentally in the temperature range (293.15–333.15 K). By using the Laplace equation, isentropic compressibilities, κS, were calculated from density and sound velocity values.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0021961418302313; http://dx.doi.org/10.1016/j.jct.2018.12.018; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85058671432&origin=inward; https://linkinghub.elsevier.com/retrieve/pii/S0021961418302313; https://dul.usage.elsevier.com/doi/; https://api.elsevier.com/content/article/PII:S0021961418302313?httpAccept=text/xml; https://api.elsevier.com/content/article/PII:S0021961418302313?httpAccept=text/plain; https://dx.doi.org/10.1016/j.jct.2018.12.018
Elsevier BV
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