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- Title
Efficient CO<sub>2</sub> Removal for Ultra<bold>‐</bold>Pure CO Production by Two Hybrid Ultramicroporous Materials.
- Authors
Chen, Kai‐Jie; Yang, Qing‐Yuan; Sen, Susan; Madden, David G.; Kumar, Amrit; Pham, Tony; Forrest, Katherine A.; Hosono, Nobuhiko; Space, Brian; Kitagawa, Susumu; Zaworotko, Michael J.
- Abstract
Abstract: Removal of CO2 from CO gas mixtures is a necessary but challenging step during production of ultra‐pure CO as processed from either steam reforming of hydrocarbons or CO2 reduction. Herein, two hybrid ultramicroporous materials (HUMs), <bold>SIFSIX‐3‐Ni</bold> and <bold>TIFSIX‐2‐Cu‐i</bold>, which are known to exhibit strong affinity for CO2, were examined with respect to their performance for this separation. The single‐gas CO sorption isotherms of these HUMs were measured for the first time and are indicative of weak affinity for CO and benchmark CO2/CO selectivity (>4000 for <bold>SIFSIX‐3‐Ni</bold>). This prompted us to conduct dynamic breakthrough experiments and compare performance with other porous materials. Ultra‐pure CO (99.99 %) was thereby obtained from CO gas mixtures containing both trace (1 %) and bulk (50 %) levels of CO2 in a one‐step physisorption‐based separation process.
- Subjects
CARBON dioxide; GAS mixtures; CARBON monoxide; HYDROCARBONS; STEAM reforming
- Publication
Angewandte Chemie, 2018, Vol 130, Issue 13, p3390
- ISSN
0044-8249
- Publication type
Article
- DOI
10.1002/ange.201706090