JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Online ISSN : 1881-1299
Print ISSN : 0021-9592
DETERMINATION OF ACTIVITY COEFFICIENTS AT INFINITE DILUTION FROM DEW POINT AND/OR BUBBLE POINT CURVES
MASAHIRO KATOMITSUHO HIRATA
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1970 年 3 巻 1 号 p. 1-5

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抄録
A new method for determining activity coefficients at infinite dilution from dew point and/or bubble point data in binary systems is proposed.
The extrapolated values of dew point and bubble point parameters, respectively, defined as D≡ a1a2/(1 - a1) (1 - a2) and B≡ (1 - b1) (1 - b2)/b1b2, agree thermodynamically with the activity coefficients at infinite dilution. The values of ''a'' and ''b'', respectively, can be calculated by a≡ γ× = (π/P)y from dew point data and by b≡ (y/γ) = (P/π)× from bubble point data, where x, y, P, π and γ, respectively, express mole fraction in liquid phase, that in vapor phase, vapor pressure, total pressure and activity coefficient.
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© The Society of Chemical Engineers, Japan
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