Measurements of Compressed Liquid Densities for CO2(1)+Butan-1-ol(2)via a Vibrating Tube Densimeter at Temperatures from(313 to 363)K and Pressures up to 25 MPa

摘要

Studies of compressed liquid densities of butan-1-ol and of CO2(1)+butan-1-ol(2)binary mixtures were carried out at temperatures from(313 to 363)K and pressures up to 25 MPa.Densities were measured for binary mixtures at eight different compositions(x1=0.0251,0.0857,0.1842,0.3749,0.4972,0.5965,0.8663,and 0.9698).A vibrating tube densimeter using two reference calibration fluids was used to measure the volumetric properties.The uncertainty in the experimental densities is estimated to be better than+-0.2 kg·m~(-3).Densities of butan-1-ol are correlated using a short explicit volume equation and the Benedict-Webb-Rubin-Starling equation of state(BWRS EoS).Experimental densities of butan-1-ol were compared with two available correlations.The compressed liquid densities determined here for CO2(1)+butan-1-ol(2)mixtures are the first set of data for this mixture reported in the literature.Volumes of mixing were determined using butan-1-ol densities calculated with the BWRS EoS and CO2 densities calculated with a reference EoS.