Sunghyun Jang, Moon Sam Shin, Yongjin Lee, and Hwayong Kim. School of Chemical and Biological Engineering, Seoul National University, Seoul National University 302-718, Shilim-Dong, Kwanak-gu, Seoul, South Korea
Vapor-liquid equilibria (VLE) for the n-hexane + 2-isopropoxyethanol and n-heptane + 2-isopropoxyethanol (at 60, 80, and 100 kPa) systems were measured. Two systems present positive deviations from ideal behavior. And the system n-heptane + 2-isopropoxyethanol shows a minimum boiling azeotrope at all pressures. Experimented data have been correlated with the two term virial equation for vapor-phase fugacity coefficients and the three suffix Margules equation, Wilson, NRTL, and UNIQUAC equations for liquid-phase activity coefficients. Experimental VLE data show excellent agreements with models.