Studies on Self-Association of n-AlcohoIs by Gas-Liquid Chromatography

Abstract

Abstract: The finite concentration activity coefficients of n-alcohols (C₁-C₄) were measured in squalane at 313.15 Kby using gas-liquid chromatography.The data were treated with Kretschmer-Wiebe and Wiehe-Bagley two-parameter association model, respectively.The self-association equilibrium constants KAand the physical interaction parameters β were evaluated.It is found that the solute activity coefficients for ail systems decrease in the following order:methanol>ethanol>n-propanor> n-butanol.There exists a similar order for the constants KAand β.Both the studied two-parameter models can be fitted to the experimental results satisfactorily.

Key words: Gas-liquid chromatography, Finite concentration activity coefficient, Alcohols, Self-asso- ciation

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ZHOU Xiao-Xian, WANG Yi-Lin, LI Song-Lin, ZHENG Guo-Kang. Studies on Self-Association of n-AlcohoIs by Gas-Liquid Chromatography[J]. Chem. J. Chinese Universities, 1993, 14(6): 817.

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Studies on Self-Association of n-AlcohoIs by Gas-Liquid Chromatography

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