Thermodynamics Research Center / ThermoML | Journal of Chemical and Engineering Data

ABSTRACT

Densities and viscosities of aqueous solutions of Ethanolamine (MEA), 1-Butyl-3-methylimidazolium tetrafluoroborate (BmimBF4), and their mixtures were measured. The experiments covered the mole fraction ranges: 1.00-9.38 mol% of BmimBF4 in its aqueous solutions, 3.94-21.97 mol% of MEA in its aqueous solutions, and 1.32-17.01 mol% of MEA + 5.10-34.02 mol% of BmimBF4 in the mixtures. The results are compared with available data in literatures and correlated using semiempirical formula as functions of temperature and concentration of MEA and BmimBF4. At the concentration suitable for the CO2 capture, the viscosity of the hybrid absorbent did not significantly increased by the addition of BmimBF4. Moreover, the addition of BmimBF4 reduced the Henry constant, which is significant for reaction kinetics.