VAPOR-LIQUID-EQUILIBRIA IN THE CARBON-DIOXIDE PLUS 1-PROPANOL SYSTEM

Vapor-liquid equilibria for CO2 + 1-propanol mixtures have been measur ed at 315.0, 326.5, and 337.2 K using a high-pressure flow apparatus. The pressure in the experiments varied from 26.38 to 89.79 MPa. Data a t 315.0 K were found to be significantly different from the data repor ted by Suzuki et al. and Yao et al. However; the results at 337.2 K ar e in good agreement with the results of Suzuki et al., and the data ap pear to be more consistent with the trends exhibited by other CO2 + 1- alkanol mixtures. The data were correlated with Patel-Teja and Peng-Ro binson equations of state using classical van der Waals one-fluid mixi ng rules and with the Peng-Robinson-Stryjek-Vera equation of state usi ng the Wong-Sandler mixing rules.