GAS-LIQUID SOLUBILITIES OF THE METHANOL SYNTHESIS COMPONENTS IN VARIOUS SOLVENTS

The solubilities of CO, CO2, H-2, CH3OH, and H2O were measured in hexadecane, octadecane, squalane, and benzophenone at 293-573 K and 1.013-90 bar using volume displacement and material balance techniques. The experimental results, consisting of 260 solubility data for 16 binary mixtures, were used to test the applicability of four solubility models. When using literature model parameters, the Skjold-Jorgensen group-contribution equation of state gives the best agreement with the experimental results with an average deviation of 15%. The Soave-Redlich-Kwong and Peng-Robinson equations of state give an excellent agreement with the experimental results when optimized binary interaction coefficients are used. The regular solutions theory gives reasonable results except for the methanol- and water-containing systems when using no optimized binary parameters. Finally, our results show a reasonable agreement with the available literature data.