N-rich porous carbons with tunable affinity for CO<sub>2</sub> adsorption achieve size-sieving CO<sub>2</sub>/N<sub>2</sub> selectivity in turbostratic interlayers
James N. Burrow, J. Ehren Eichler, Yu Wang, David C. Calabro, C. Buddie Mullins
Abstract
Carbons with varying porosity and N-content exhibit tunable thermodynamics of CO 2 adsorption, stemming from synergy between confinement and surface chemistry. Further, size-sieving CO 2 /N 2 adsorption selectivity occurs in sub-nanoscale interlayers.
Topics & Concepts
AdsorptionSelectivityPorosityMaterials scienceChemical engineeringPorous mediumNanoscopic scaleNanotechnologyChemistryPhysical chemistryOrganic chemistryCatalysisComposite materialEngineeringCarbon Dioxide Capture TechnologiesMembrane Separation and Gas TransportPhase Equilibria and Thermodynamics