000156528 001__ 156528
000156528 005__ 20251017144551.0
000156528 0247_ $$2doi$$a10.1039/d5ta00917k
000156528 0248_ $$2sideral$$a143934
000156528 037__ $$aART-2025-143934
000156528 041__ $$aeng
000156528 100__ $$aLópez-Porfiri, Pablo
000156528 245__ $$aThe hydrophilic nature trade-off of supported ionic liquid membranes on CO2/CH4 separation performance
000156528 260__ $$c2025
000156528 5060_ $$aAccess copy available to the general public$$fUnrestricted
000156528 5203_ $$aBiomethane has been highlighted as an energy transition carrier in the quest for a resilient bioeconomy. Advances in its production process are accompanied by the need for new efficient separation methods for purification and carbon capture. However, biogas is fully saturated with water, jeopardising the expected performance of proposed novel materials. In this work, imidazolium-based Supported Liquid Membranes (SLM) with different hydrophilicity levels were proven to separate mixed CO2/CH4 successfully. IL-based SLMs were assessed in terms of stability, transport kinetics, and phase equilibria. Gas diffusion in dry and humid environments was estimated using the time-resolved FTIR-ATR spectroscopy technique. Henry's law constants of CO2 and CH4 and molecular interactions were estimated using the quantum chemical COnductor like Screening MOdel for Real Solvents (COSMO-RS) method. The SLM stability diagram is proposed to represent the effect of the gas water content on the total filled pores as a function of the components' physicochemical properties, support morphology, and operational pressure gradient. Diffusion coefficients of CO2 in the hydrophilic SLMs are substantially altered under wet environments. However, it has been shown that gas solubility mainly dominates the gas separation. The SLM's water sorption increases this effect by further rejecting methane. While the membrane hydrophilicity improves the gas selectivity, its stability diminishes in humid gas processing. The trade-off between the separation performance using highly hydrophilic solvents and the SLM module stability under real and variable conditions of pressure and humidity constrains the technology feasibility. Therefore, its study must be considered in the development and application of SLMs in sustainable biofuel production routes.
000156528 536__ $$9info:eu-repo/grantAgreement/ES/MICINN/PID2021-141965OB-C22
000156528 540__ $$9info:eu-repo/semantics/openAccess$$aby$$uhttps://creativecommons.org/licenses/by/4.0/deed.es
000156528 655_4 $$ainfo:eu-repo/semantics/article$$vinfo:eu-repo/semantics/publishedVersion
000156528 700__ $$aGavagni, Perla
000156528 700__ $$aMoore, Benjamín S.
000156528 700__ $$aGonzález-Miquel, María
000156528 700__ $$0(orcid)0000-0002-6905-714X$$aGorgojo, Patricia$$uUniversidad de Zaragoza
000156528 700__ $$aFerrari, María-Chiara
000156528 700__ $$aPérez-Page, María
000156528 7102_ $$15005$$2555$$aUniversidad de Zaragoza$$bDpto. Ing.Quím.Tecnol.Med.Amb.$$cÁrea Ingeniería Química
000156528 773__ $$g13, 18 (2025), 13518-13531$$pJ. mater. chem. A$$tJournal of Materials Chemistry A$$x2050-7488
000156528 8564_ $$s2065642$$uhttps://zaguan.unizar.es/record/156528/files/texto_completo.pdf$$yVersión publicada
000156528 8564_ $$s2726574$$uhttps://zaguan.unizar.es/record/156528/files/texto_completo.jpg?subformat=icon$$xicon$$yVersión publicada
000156528 909CO $$ooai:zaguan.unizar.es:156528$$particulos$$pdriver
000156528 951__ $$a2025-10-17-14:11:50
000156528 980__ $$aARTICLE