Sub-Ambient Temperature Direct Air Capture of CO<sub>2</sub> using Amine-Impregnated MIL-101(Cr) Enables Ambient Temperature CO<sub>2</sub> Recovery
Guanhe Rim, Fanhe Kong, Mingyu Song, Cornelia Rosu, Pranjali Priyadarshini, Ryan P. Lively, Christopher W. Jones
Abstract
working capacities over multiple humid small temperature swing cycles. These results demonstrate that appropriately designed DAC sorbents can operate in a weak chemisorption modality at low temperatures even in the presence of humidity. Significant energy savings may be realized via the utilization of small temperature swings enabled by this weak chemisorption behavior. This work suggests that significant work on DAC materials that operate at low, sub-ambient temperatures is warranted for possible deployment in temperate and polar climates.
Topics & Concepts
AdsorptionSorbentHumidityDesorptionAmine gas treatingRelative humidityChemisorptionCo2 removalAtmospheric temperature rangeMaterials scienceChemical engineeringChemistryAnalytical Chemistry (journal)Environmental chemistryCarbon dioxideThermodynamicsOrganic chemistryEngineeringPhysicsCarbon Dioxide Capture TechnologiesPhase Equilibria and ThermodynamicsAdsorption and Cooling Systems