Nitrogen-doped porous aromatic frameworks for enhanced CO2 adsorption
- Univ. of California, Riverside, CA (United States)
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Recently synthesized porous aromatic frameworks (PAFs) exhibit extremely high surface areas and exceptional thermal and hydrothermal stabilities. Using computer-aided design, we propose new PAFs, designated as NPAFs, by introducing nitrogen-containing groups to the biphenyl unit and predict their CO2 adsorption capacities with grand canonical Monte Carlo (GCMC) simulations. Among various NPAFs considered, one with imidazole groups shows the highest adsorption capacity for CO2 (11.5wt % at 1bar and 298K) , in comparison with 5wt % for the parent PAF (PAF- 1) at the same condition. At higher pressures (around 10bar) ,though, another NPAF with pyridinic N groups performs much better than the rest due to its greater pore volume in addition to the N functionality. This research suggests that adding N functionality to the organic linkers is a promising way to increase CO2 adsorption capacity of PAFs at ambient condition.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC); USDOE Laboratory Directed Research and Development (LDRD) Program
- Grant/Contract Number:
- AC05-00OR22725; AC02-05CH11231
- OSTI ID:
- 1286837
- Alternate ID(s):
- OSTI ID: 1244589
- Journal Information:
- Journal of Colloid and Interface Science, Vol. 438; ISSN 0021-9797
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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journal | January 2018 |
Performance of Mixed Matrix Membranes Containing Porous Two-Dimensional (2D) and Three-Dimensional (3D) Fillers for CO2 Separation: A Review
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journal | July 2018 |
On the Gas Storage Properties of 3D Porous Carbons Derived from Hyper-Crosslinked Polymers
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journal | April 2019 |
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