title: Ultralow Parasitic Energy for Postcombustion CO2Capture Realized in a Nickel Isonicotinate Metal-Organic Framework with Excellent Moisture Stability.
abstract: Metal-organic frameworks (MOFs) have attracted significant attention as solid sorbents in gas separation processes for low-energy postcombustion CO2capture. The parasitic energy (PE) has been put forward as a holistic parameter that measures how energy efficient (and therefore cost-effective) the CO2capture process will be using the material. In this work, we present a nickel isonicotinate based ultramicroporous MOF, 1 [Ni-(4PyC)2·DMF], that has the lowest PE for postcombustion CO2capture reported to date. We calculate a PE of 655 kJ/kg CO2, which is lower than that of the best performing material previously reported, Mg-MOF-74. Further, 1 exhibits exceptional hydrolytic stability with the CO2adsorption isotherm being unchanged following 7 days of steam-treatment (>85% RH) or 6 months of exposure to the atmosphere. The diffusion coefficient of CO2in 1 is also 2 orders of magnitude higher than in zeolites currently used in industrial scrubbers. Breakthrough experiments show that 1 only loses 7% of its maximum CO2capacity under humid conditions.
authors.forename: Shyamapada
authors.initials: S
authors.lastname: Nandi
authors.affiliation: Centre for Catalysis Research and Innovation & Department of Chemistry and Biomolecular Sciences, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada.
authors.forename: Sean
authors.identifier: 0000-0001-6153-8515
authors.initials: S
authors.lastname: Collins
authors.forename: Debanjan
authors.initials: D
authors.lastname: Chakraborty
authors.affiliation: Physical and Computational Science Directorate, Pacific Northwest National Laboratory , Richland, Washington 99354, United States.
authors.forename: Debasis
authors.initials: D
authors.lastname: Banerjee
authors.affiliation: Physical and Computational Science Directorate, Pacific Northwest National Laboratory , Richland, Washington 99354, United States.
authors.forename: Praveen K
authors.initials: PK
authors.lastname: Thallapally
authors.affiliation: Centre for Catalysis Research and Innovation & Department of Chemistry and Biomolecular Sciences, University of Ottawa , Ottawa, Ontario K1N 6N5, Canada.
authors.forename: Tom K
authors.initials: TK
authors.lastname: Woo
authors.forename: Ramanathan
authors.identifier: 0000-0003-4490-4397
authors.initials: R
authors.lastname: Vaidhyanathan