Viscosity of the binary mixture propane - isobutane in the gaseous state

Viscosity, SecondpVTVirial Coefficient, and Diffusion of Binary Mixtures of Small Alkanes CH4, C2H6, C3H8,n-C4H10,i-C4H10,n-C5H12,i-C5H12, and C(CH3)4Predicted by Means of an Isotropic Temperature-Dependent Potential

“…Relative deviations 100·(η AB exptl − η AB calcd )/η AB calcd between experimental and calculated interaction viscosities: ●, CH 4 −C 2 H 6 ; ◼, CH 4 −C 3 H 8 ; ○, CH 4 − n -C 4 H 10 ; ▲, C 2 H 6 −C 3 H 8 ; △, C 3 H 8 − n -C 4 H 10 ; ◆, i -C 4 H 10 − n -C 4 H 10 (all Abe et al); ▽, C 2 H 6 − n -C 4 H 10 (Abe et al); ◻, CH 4 − n -C 4 H 10 (Kestin and Yata); ×, C 3 H 8 − i -C 4 H 10 (Küchenmeister et al).…”

“…In Table , reference is given to N = 697 available experimental data points of B AB , B mix , η AB , η mix , and D AB for 20 binary mixtures measured by different methods between 1931 and 2001. The experimental data of the second pVT virial coefficient B AB and B mix are taken from the compilation of Dymond et al The viscosities η mix and η AB were measured by Trautz and Sorg, Abe et al, , Bicher and Katz, Giddings et al, Kestin and Yata, and Küchenmeister et al The tabulated diffusion coefficients in Table are either obtained by direct measurements (Trautz and Müller, Gotoh et al, Gover, Arora et al) or recalculated from measured viscosities via eq . This method of recalculation is widely used to obtain diffusion coefficients.…”

“…Relative deviations 100·( D AB exptl − D AB calcd )/ D AB calcd between experimental and calculated binary diffusion coefficients of C 3 H 8 − i -C 4 H 10 mixtures: ●, Küchenmeister et al; ○, Gotoh et al …”

“…For the latter two mixtures, his results deviate by no more than 5 % from our findings, where for the first mixture deviations between 3 % and 8 % are observed. A recent experimental work of Vogel and coworkers presents 14 viscosities η mix of the equimolar binary mixture C 3 H 8 − i -C 4 H 10 measured in the range between (298 and 627) K with an unsurpassed uncertainty not higher than 0.3 %. Using these data, the authors obtained the interaction viscosity coefficients η AB and the binary diffusion coefficients D AB with only slightly higher uncertainty.…”

Viscosity for Eight Gaseous and Vapor Mixtures: Revisited from Experiment between 297 K and 638 K. Final and Preliminary Values for the Interaction Viscosity and for the Product of Molar Density and Diffusion Coefficient in the Limit of Zero Density

“…In the present work, the original measurements on the gaseous and vapor mixtures carbon dioxide−ethane [8], propane−isobutane [9], methanol−triethylamine [10], methanol−benzene [11], methanol−cyclohexane [11], benzene−toluene [12], benzene−p-xylene [12], and benzene−phenol [13] are re-evaluated and particularly with regard to the interaction viscosity in the limit of zero density η (0) i j (T ) further analyzed. For this purpose, the temperature functions of the zero-density and the initial density viscosity coefficients η (0) i (T ) and η…”