Abstract
A method for estimating the vapor-liquid equilibria of binary liquid solutions using an Accelerating Rate Calorimeter (ARC) is described. ARC provided data in the ranges: (0–14) kPa and (300–450) K. The experimental PTx data were reduced to partial pressures and vapor phase compositions using Barker's method. The well-known system, benzene/cyclopentane, was selected to evaluate the ARC method. GC-headspace analysis confirmed the vapor phase compositions. Both GC and ARC data on the vapor phase agree with literature data to within ±0.0085 mol fraction units. Experimental pressure data agree with literature data to within ±2 kPa. Model pressure data agree with literature data to within ±1.5 kPa. Also described is the high-pressure VLE of the phosgene-chlorobenzene binary at 448 K.
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The authors thank the following persons (all at The Olin Research Center): E. A. Barsa and B. W. Tucker for suggesting that we study the phosgene-mcb binary by ARC and for preparing the required solutions, L. D. Campo and R. A. Nehrkorn for providing expert library services, R. Wang for statistical analysis, and J. F. Womac and P. A. Turley for reviewing the manuscript.
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Audette, D.E., Giordano, D.E. & Wedlich, R.C. Estimating VLE of binary liquid solutions by ARC and GC. Journal of Thermal Analysis 49, 671–677 (1997). https://doi.org/10.1007/BF01996750
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DOI: https://doi.org/10.1007/BF01996750