70677 20200221144223.0 doi 10.1016/j.ijggc.2016.09.014 sideral 97100 ART-2016-97100 eng Rivas, C. High-pressure speed of sound in pure CO2 and in CO2 with SO2 as an impurity using methanol as a doping agent 2016 Access copy available to the general public Unrestricted Reliable speed of sound, c, values in CO2- rich mixtures and pure CO2 are required for carbon capture and storage (CCS) technology but are difficult to determine, particularly at relatively high frequencies. We tested the suitability of methanol as doping agent to obtain accurate c values in CCS systems at 5 MHz. We measured c in seven CO2-rich, CO2 + methanol mixtures between 263.15 and 323.15 K and up to 196.30 MPa, and we extrapolated the values to obtain c in pure CO2. Additionally, we measured c from 263.15 to 373.19 K and up to 190.10 MPa in two CO2-rich, CO2 + SO2 mixtures with the same SO2 composition, which is of interest for CCS, with one mixture doped with methanol. We compared our results for pure CO2 with the literature and the Span and Wagner equation of state (EoS). We validated the PC-SAFT EoS and the modeling with the REFPROP 9 software for the mixtures by comparing the predicted values with our experimental data under the studied conditions. We conclude that methanol is a suitable doping agent to measure c in pure CO2 and CO2-rich mixtures. For the CO2 + SO2 mixtures, the effect of methanol on the experimental values is small and negligible for modeling. info:eu-repo/grantAgreement/ES/MINECO/ENE2013-44336-R info:eu-repo/semantics/openAccess by-nc-nd http://creativecommons.org/licenses/by-nc-nd/3.0/es/ 3.741 2016 ENERGY & FUELS 24 / 92 = 0.261 2016 Q2 T1 GREEN & SUSTAINABLE SCIENCE & TECHNOLOGY 11 / 31 = 0.355 2016 Q2 T2 ENGINEERING, ENVIRONMENTAL 13 / 49 = 0.265 2016 Q2 T1 1.343 2016 Energy (miscellaneous) 2016 Q1 Pollution 2016 Q1 Management, Monitoring, Policy and Law 2016 Q1 Industrial and Manufacturing Engineering 2016 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion (orcid)0000-0002-6992-5656 Gimeno, B. Universidad de Zaragoza (orcid)0000-0003-1810-9488 Artal, M. Universidad de Zaragoza (orcid)0000-0003-2632-2916 Blanco, S. T. Universidad de Zaragoza (orcid)0000-0001-5256-6055 Fernández, J. Universidad de Zaragoza (orcid)0000-0001-6607-6858 Velasco, I. Universidad de Zaragoza 2012 755 Universidad de Zaragoza Dpto. Química Física Área Química Física 54, Part 2 (2016), 737-751 International Journal of Greenhouse Gas Control International Journal of Greenhouse Gas Control 1750-5836 4781988 http://zaguan.unizar.es/record/70677/files/texto_completo.pdf Postprint 68139 http://zaguan.unizar.es/record/70677/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:70677 articulos driver 2020-02-21-13:16:40 ARTICLE