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Title: Ultralow Parasitic Energy for Postcombustion CO2 Capture Realized in a Nickel Isonicotinate Metal-Organic Framework with Excellent Moisture Stability
Collins, Sean
Chakraborty, Debanjan
Banerjee, Debasis
Thallapally, Praveen K.
Woo, Tom
Dept. of Chemistry
Keywords: Ultralow Parasitic Energy
Excellent Moisture Stability
Metal-organic frameworks
Humid conditions
Issue Date: Jan-2017
Publisher: American Chemical Society
Citation: Journal of the American Chemical Society, 139(5),1734-1737.
Abstract: Metal-organic frameworks (MOFs) have attracted significant attention as solid sorbents in gas separation processes for low-energy postcombustion CO2 capture. The parasitic energy (PE) has been put forward as a holistic parameter that measures how energy efficient (and therefore cost-effective) the CO2 capture 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 CO2 capture 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 CO2 adsorption isotherm being unchanged following 7 days of steam-treatment (>85% RH) or 6 months of exposure to the atmosphere. The diffusion coefficient of CO2 in 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 CO2 capacity under humid conditions.
ISSN: Feb-63
Appears in Collections:JOURNAL ARTICLES

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