Llosa Tanco, Margot A.Medrano, Jose A.Cechetto, ValentinaGallucci, FaustoPacheco Tanaka, David A.2021-05-28Llosa Tanco , M A , Medrano , J A , Cechetto , V , Gallucci , F & Pacheco Tanaka , D A 2021 , ' Hydrogen permeation studies of composite supported alumina-carbon molecular sieves membranes: Separation of diluted hydrogen from mixtures with methane : Separation of diluted hydrogen from mixtures with methane ' , International Journal of Hydrogen Energy , vol. 46 , no. 37 , pp. 19758-19767 . https://doi.org/10.1016/j.ijhydene.2020.05.0880360-3199researchoutputwizard: 11556/948Publisher Copyright: © 2020 The Author(s)One alternative for the storage and transport of hydrogen is blending a low amount of hydrogen (up to 15 or 20%) into existing natural gas grids. When demanded, hydrogen can be then separated, close to the end users using membranes. In this work, composite alumina carbon molecular sieves membranes (Al-CMSM) supported on tubular porous alumina have been prepared and characterized. Single gas permeation studies showed that the H2/CH4 separation properties at 30 °C are well above the Robeson limit of polymeric membranes. H2 permeation studies of the H2–CH4 mixture gases, containing 5–20% of H2 show that the H2 purity depends on the H2 content in the feed and the operating temperature. In the best scenario investigated in this work, for samples containing 10% of H2 with an inlet pressure of 7.5 bar and permeated pressure of 0.01 bar at 30 °C, the H2 purity obtained was 99.4%.101457975enginfo:eu-repo/semantics/openAccessjournal article10.1016/j.ijhydene.2020.05.088Hydrogen separationCarbon membraneHydrogen-methane mixtureLow concentration hydrogenHydrogen separationCarbon membraneHydrogen-methane mixtureLow concentration hydrogenRenewable Energy, Sustainability and the EnvironmentFuel TechnologyCondensed Matter PhysicsEnergy Engineering and Power TechnologySDG 7 - Affordable and Clean EnergyProject IDinfo:eu-repo/grantAgreement/EC/H2020/700355/EU/Flexible Hybrid separation system for H2 recovery from NG Grids/HyGridinfo:eu-repo/grantAgreement/EC/H2020/700355/EU/Flexible Hybrid separation system for H2 recovery from NG Grids/HyGridFunding InfoThis project received funding from the Fuel Cells and Hydrogen 2 Joint Undertaking under grant agreement N700355 (Hygrid). This Joint Undertaking receives support fromthe European Union’s Horizon 2020 Research and InnovationProgramme, Hydrogen Europe and N. ERGHYThis project received funding from the Fuel Cells and Hydrogen 2 Joint Undertaking under grant agreement N700355 (Hygrid). This Joint Undertaking receives support fromthe European Union’s Horizon 2020 Research and InnovationProgramme, Hydrogen Europe and N. ERGHYhttp://www.scopus.com/inward/record.url?scp=85086847123&partnerID=8YFLogxK