Print: | ISSN 0256-1115 |
Online: | ISSN 1975-7220 |
Korean Journal of Chemical Engineering,
Vol.17, No.5, 502-505, 2000 Measurement of Infinite-dilution Activity Coefficients of Alcohols in Water Using Relative Gas-liquid Chromatographic Method
Infinite-dilution activity coefficients of n-alcohols (C-1-C-8) in water were measured by using the relative gas-liquid chromatographic method proposed by Orbey and Sandler [1991]. The temperature range of measurement was 298 to 343 K. The gamma(infinity) values at 298.15 K varied from 1.72 (methanol) to 1970 (n-heptanol). ASOG, UNIFAC, modified UNIFAC (Dortmund). modified UNIFAC (Lyngby) group contribution methods could predict gamma(infinity) to within 16.9, 28.8, 23.9 and 31.8 average percent error, respectively, for all systems and temperatures.
Keywords:
Measurement; Infinite-Dilution Activity Coefficients; Relative Gas-Liquid Chromatography; ASOG; UNIFAC
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