Binary VLE measurements and modeling for selected amine systems

Abstract

During the course of this work, vapor pressure data of pure water, DEEA and DIPEA was measured. The results give good agreement with literature data. VLE data of DEEA-H2O and DIPEA-H2O systems was then obtained at varying concentration and temperature (50-95oC) range. Experimental activity coefficients were calculated using this VLE data. Moreover, FTIR spectroscopy in conjunction with ?The Unscrambler? was used for amine analyses of the experimental samples and results were compared with those of titration and LCMS. The comparisons give clear evidence of the reliability and repeatability of the said technique. The experimental activity coefficients were also fit to NRTL, Wilson and UNIQUAC equations. DEEA-H2O data gives a very good fit while DIPEA-H2O system could not be modeled properly due to the lack of vapor phase data. Recommendations for further work are also included in case of DIPEA-H2O system.