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I1.03 - Nanoporous Materials Chemistry for CO2 Capture and Separation 
Date/Time:
April 22, 2014   9:15am - 9:45am
 
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Control of carbon dioxide emissions without significant penalties requires effective CO scrubbing from point sources, such as fossil fuel burning power plants, cement factories and steel making. Capturing process is the most costly; hence the research is directed to finding solutions to it. Solids with slight chemisorptive nature are identified as most likely candidates for a sustainable solution. Nanoporous (pore size < 100 nm) materials show considerable CO uptakes and are likely to replace monoethanol amine (MEA) solutions for industrial CO capture. We have developed nanoporous covalent organic polymers (COPs), which show significant capacities and selectivities for CO. To name a few, COP-1 shows 5.6 g/g CO uptake at 200 bar and 45 °C, COP-2 shows a CO/H selectivity of over 10k:1, COP-79 has a CO/N selectivity of 308 at 50 °C, COP-83 has CO2 uptake capacity of 5 mmol/g at 298 K and 1 bar and COP-97 showed an uptake of 8 % (w/w) CO in 2 minutes from a simulated flue gas mixture (CO2 15%, HO 3.8%, He 81.2%, 40 C, flow rate : 80 mL/min). Our results point to an ideal nanoporous structure to be made from a highly porous, inexpensive, physisorptive solid, which is chemically modified with chemisorptive functionalities such as amines.References: 1. H. A. Patel, et al., Nature Commun., 4:1357, (2013) 2. H. A. Patel, et al., Adv. Funct. Mater., 23, 2270-2276 (2013).3. H. A. Patel, et al., J. Mater. Chem., 22, 8431-8437 (2012).4. Image adapted from The Economist, Mar 5, 2009.
 


 
 
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