𝔖 Bobbio Scriptorium
✦   LIBER   ✦

( Vapour  +  liquid ) equilibrium measurement and correlation of the refrigerant ( propane  +  1,1,1,3,3,3-hexafluoropropane) atT =  ( 283.13, 303.19, and 323.26) K

✍ Scribed by Sergio Bobbo; ; Roberto Camporese; ; Roman Stryjek

Publisher
Elsevier Science
Year
2000
Tongue
English
Weight
129 KB
Volume
32
Category
Article
ISSN
0021-9614

No coin nor oath required. For personal study only.

✦ Synopsis

Vapour + liquid) equilibrium (v.l.e.) data were measured for the refrigerant {propane (R290) + 1,1,1,3,3,3-hexafluoropropane (R236fa)} at T = (283. 13, 303.19, and 323.26) K, using forced recirculation of the vapour through the liquid by means of a magnetic pump. The composition of both phases was determined by gas chromatography.

Due to the presence of more than negligible amounts of impurities in the R290, two sets of data are presented and correlated: the first was determined disregarding the impurities in the composition measurement, assuming that the mixture was binary; the second set was obtained assuming that the mixture was quaternary, considering the two impurities detected {n-butane (R600) and isobutane (R600a)} as components of the mixtures. The results were correlated using the Carnahan-Starling-De Santis equation of state. The experimental findings show a strong positive deviation from Raoult's law and the presence of an azeotropic composition at high R290 concentrations. Applying the homomorph concept, the hydrogen-bonding energy in (dimethyl ether + R236fa) was estimated using previously published results and those presented here. The v.l.e. of the system are not reported elsewhere in the literature.

πŸ“œ SIMILAR VOLUMES

Vapour  +  liquid equilibrium
Vapour  +  liquid equilibrium measurements and correlation of the ternary mixture (N-methylacetamide  +  ethanol  +  water) at the temperature 313.15 K
✍ Jan Zielkiewicz πŸ“‚ Article πŸ“… 2000 πŸ› Elsevier Science 🌐 English βš– 95 KB

Total vapour pressure measurements made by a modified static method for the ternary mixture (N -methylacetamide + ethanol + water) and for the binary mixture (N -methylacetamide + ethanol) at the temperature 313.15 K are presented. Different expressions for the excess Gibbs free energy are tested, a

Excess molar enthalpies and excess molar
Excess molar enthalpies and excess molar volumes of binary systems containing {xCH3(CH2)7Cl +  (1  βˆ’ x)CH3(CH2)n βˆ’ 1OH} (n =  4 to 8) atT =  298.15 K
✍ P. Santana; J. Balseiro; J. Salgado; E. JimΓ©nez; J.L. Legido; L. Romanı́; M.I. P πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 139 KB

TABLE 1. Densities ρ for the pure liquids at T = 298.15 K Liquid ρ/(g β€’ cm -3 ) expt lit 1-Cholorooctane 0.86875 0.86876 (4) 1-Butanol 0.80575 0.80576

Measurements and analysis of excess mola
Measurements and analysis of excess molar enthalpies and excess molar volumes of the binary systems {xCH3(CH2)3Cl + (1 βˆ’ x) CH3(CH2)nβˆ’1OH} (n = 4 to 8) atT = 298.15 K
✍ P. Santana; J. Balseiro; E. JimΓ©nez; C. Franjo; J.L. Legido; R. RomanΔ±&#x030 πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 120 KB

TABLE 1. Densities ρ for the pure liquids at T = 298.15 K ρ/(gβ€’cm -3 ) Liquid expt lit 1-Chlorobutane 0.88069 0.88079 (4) 1-Butanol 0.80575 0.80576 (5)

Isobaric (vapour  +  liquid) e
Isobaric (vapour  +  liquid) equilibrium of (1,3-dioxolane, or 1,4-dioxane +  1-butanol, or 2-butanol) at 40.0 kPa and 101.3 kPa
✍ I. GascΓ³n; M. DomΔ±́nguez; P. Cea; M.C. LΓ³pez; F.M. Royo πŸ“‚ Article πŸ“… 2001 πŸ› Elsevier Science 🌐 English βš– 276 KB

Isobaric (vapour + liquid) equilibrium (v.l.e.) of (1,3-dioxolane, or 1,4-dioxane + 1butanol, or 2-butanol) at 40.0 kPa and 101.3 kPa have been studied with a dynamic recirculating still. The experimental data for all mixtures were checked for thermodynamic consistency using the method of Van Ness.

(p, ρ, T) measurements of (ammonia 
(p, ρ, T) measurements of (ammonia +  water) in the temperature range 310 K to 400 K at pressures up to 17 MPa. II. Measurements of{ xNH3 +  (1  βˆ’ x )H2O } at x = (1.0000, 0.8374, 0.6005, and 0.2973)
✍ J. Kondo; Y. Yasukawa; M. Uematsu πŸ“‚ Article πŸ“… 2002 πŸ› Elsevier Science 🌐 English βš– 430 KB

Measurements of ( p, ρ, T ) for {x NH 3 + (1 -x)H 2 O} at x = (1.0000, 0.8374, 0.6005, and 0.2973) and at specified temperatures and pressures in the compressed liquid phase were carried out with a metal-bellows variable volumometer between T = 310 K and T = 400 K at pressures up to 17 MPa. The resu

Thermodynamic properties of {xCH3OH &#xa
Thermodynamic properties of {xCH3OH  + (1βˆ’x)H2O} withx =  (1.0000 and 0.4993) in the temperature range from 320 K to 420 K at pressures up to 200 MPa
✍ O. Osada; M. Sato; M. Uematsu πŸ“‚ Article πŸ“… 1999 πŸ› Elsevier Science 🌐 English βš– 175 KB

Measurements of ( p, ρ, T ) for {xCH 3 OH + (1x)H 2 O} with x = (1.0000 and 0.4993) at specified temperatures and pressures in the compressed liquid phase were carried out with a metal-bellows variable volumometer along six isotherms between T = 320 K and T = 420 K at pressures from the bubble point