doi:10.1016/j.jct.2016.03.026engRivas, C.Gimeno, B.Bravo, R.Artal, M.Fernández, J.Blanco, S. T.Velasco, M. I.Thermodynamic properties of a CO2 - Rich mixture (CO2 + CH3OH) in conditions of interest for carbon dioxide capture and storage technology and other applicationsART-2016-94730Methanol can be an impurity in transported and stored anthropogenic CO2 in carbon dioxide capture and storage technology; likewise, methanol is one of the most useful CO2 modifiers for supercritical processes. Therefore reliable values of thermodynamic properties of CO2 - rich mixtures CO2 + CH3OH are needed. We measured the following properties of a (CO2 + CH3OH) mixture with xx CO2=0.9700 in dense phase at six temperatures from 263.15 K to 313.15 K:The speed of sound, c, up to 194.49 MPa, using a double-path pulse-echo method at 5 MHz, for which a repeatability study gave an overall standard uncertainty of c, u(c) = 5.9 × 10-4c.The density, ¿, at pressures =20.00 MPa using a vibrating-tube densimeter with a standard uncertainty, u(¿) = 0.4 kg/m-3.Combining our c and ¿ experimental values and the isobaric specific heat capacity, cp, from the GERG equation of state (EoS), we calculated ¿, cp, the volume-dependent solubility parameter, dV, and the Joule-Thomson coefficient, µJT, at pressures =195.0 MPa. We are the first to report the adaptation for compressed gases of a calculation method based on numerical integration previously used only for liquids. The experimental and calculated values were compared with those from the PC-SAFT and GERG EoSs, allowing us to validate both EoSs to represent the experimental properties of the system under most conditions studied and the calculation method up to 195.0 MPa.2016http://zaguan.unizar.es/record/11822710.1016/j.jct.2016.03.026http://zaguan.unizar.es/record/118227oai:zaguan.unizar.es:118227JOURNAL OF CHEMICAL THERMODYNAMICS 98 (2016), 272-281by-nc-ndhttp://creativecommons.org/licenses/by-nc-nd/3.0/es/info:eu-repo/semantics/openAccess