N2O Solubility in and Density and Viscosity of Novel Biphasic Solvents for CO2 and Their Phase Separation Accelerators from 293.15 to 333.15 K

Densities and viscosities of aqueous solutions of monoethanolamine (MEA) diethylene glycol dimethyl ether (DGM), MEA sulfolane (TMS), diethylenetriamine (DETA) DGM, DETA TMS, DETA dimethyl sulfoxide (DMSO), and their phase separation accelerators DGM, DMSO, and TMS aqueous solutions were studied from 293.15 to 333.15 K. N20 solubilities in MEA DGM, MEA TMS, DETA DGM, DETA TMS, and DETA DMSO solutions were measured from 313.15 to 333.15 K. The experiments cover the mole fraction ranges (0-13.5 mol %) DGM, (0-8.92 mol %) DMSO, (0-9.93 mol %) TMS, (14.22-23.12 mol %) MEA + (0-9.63 mol %) DGM, (4.25-7.26 mol %) DETA + (0-10.88 mol %) DGM, (5.68-9.06 mol %) DETA + (0-14.49 mol %) TMS, (11.21-18.21 mol %) MEA + (0-14.57 mol %) TMS, and (5.68-7.42 mol %) DETA + (0-11.87 mol %) DMSO in mixed solutions. Experimental data were correlated well with empirical equations from literature studies which are a function of the temperature and the concentrations of amines and physical solvents.