Porous liquids as solvents for the economical separation of carbon dioxide from methane
Min Ying Tsang, John Patrick Convery, Beibei Lai, John Cahir, Yorukcan Erbay, David W. Rooney, Barry Murrer, Stuart L. James
Abstract
Current CO2 separation technologies by liquid solvents suffer from either high regeneration costs or low selectivity/capacity of the solvent. Dispersing ca. 12.5 wt% CO2-selective zeolite rho solid into the commercial CO2 capture solvent Genosorb® converts it into a porous liquid with at least 2.5 times greater CO2 capacity and CO2/CH4 selectivity compared to Genosorb® itself. This is predicted to result in more economical separation processes, particularly for biogas upgrading.
Topics & Concepts
SelectivitySolventMethaneZeoliteChemical engineeringBiogasCarbon dioxidePorosityMaterials scienceChemistryOrganic chemistryWaste managementCatalysisEngineeringCarbon Dioxide Capture TechnologiesMembrane Separation and Gas TransportPhase Equilibria and Thermodynamics