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dc.contributor.authorZarca Lago, Gabriel 
dc.contributor.authorOrtiz Uribe, Inmaculada 
dc.contributor.authorUrtiaga Mendia, Ana María 
dc.contributor.otherUniversidad de Cantabriaes_ES
dc.description.abstractThis work focuses on the research of novel carbon monoxide (CO) capture solvents to be applied to the separation of CO from other light components contained in gas streams of the process industry, e.g., nitrogen and hydrogen. More specifically, we examine the use of CO-selective capture solutions composed of the ionic liquid 1-ethyl-3-methylimidazolium thiocyanate ([C2mim][SCN]) and the transition metal salt copper(I) thiocyanate (CuSCN) as greener alternatives to the tetrachloroaluminate(III)-aromatic hydrocarbon solutions currently employed for CO separation from gas mixtures. In order to gain insight into the behavior of the selected ionic liquid solutions as chemical solvents for CO, their density and viscosity are characterized with respect to temperature and composition in a wide range of temperatures (273.15-303.15 K), pressures (up to 24 bar) and copper(I) concentrations (0-30 mol%). Moreover, the CO absorption has been assessed and gas-liquid equilibria are successfully described with a thermodynamic model as a function of those variables. The [C2mim]x[Cu]1-x[SCN] solutions exhibit favorable properties in terms of competitive CO sorption capacity and high selectivity towards slightly soluble gases, e.g., 996.1 mmol L-1 and CO/N2 selectivity of ~25 at 283.15 K and 23.3 bar, combined with low heat of absorption (-29.5 kJ mol-1) as well as easiness of regeneration and reuse. Consequently, these copper(I)-containing ionic liquids are promising for the development of novel and greener CO/N2 separation processes alternative to the use of flammable and toxic solvents or energy-intensive cryogenic distillations.es_ES
dc.description.sponsorshipFinancial support from the Spanish Ministry of Economy and Competitiveness (CTQ2015-66078) and Fundación Iberdrola España is gratefully acknowledged. The authors would also like to thank Prof. A. Soto, Dr. E. Rodil and Dr. H. Rodriguez from Universidad de Santiago de Compostela for their valuable help with the characterization of the thermophysical properties of the IL solutions.es_ES
dc.format.extent33 p.es_ES
dc.rights© 2018, Elsevier. Licensed under the Creative Commons Reconocimiento-NoComercial-SinObraDerivadaes_ES
dc.sourceSeparation and Purification Technology, 2018, 196, 47-56es_ES
dc.subject.otherCarbon monoxidees_ES
dc.subject.otherIonic liquidses_ES
dc.subject.otherGas separationes_ES
dc.subject.otherReactive absorptiones_ES
dc.subject.other1-Ethyl-3-methylimidazolium thiocyanatees_ES
dc.subject.otherCopper(I) thiocyanatees_ES
dc.titleNovel solvents based on thiocyanate ionic liquids doped with copper(I) with enhanced equilibrium selectivity for carbon monoxide separation from light gaseses_ES

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© 2018, Elsevier. Licensed under the Creative Commons Reconocimiento-NoComercial-SinObraDerivadaExcept where otherwise noted, this item's license is described as © 2018, Elsevier. Licensed under the Creative Commons Reconocimiento-NoComercial-SinObraDerivada