期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 13, 页码 3332-3336出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201706090
关键词
CO production; CO2 capture; gas separation; hybrid ultramicroporous materials; trace CO2 removal
资金
- ACS Petroleum Research Fund grant [ACS PRF 56673-ND6]
- Japan Society for the Promotion of Science (JSPS) [25000007]
- XSEDE Grant [TG-DMR090028]
- SFI [13/RP/B2549]
- Major Research Instrumentation Program [CHE-1531590]
- National Science Foundation [DMR-1607989]
- Direct For Mathematical & Physical Scien [1531590] Funding Source: National Science Foundation
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), SIFSIX-3-Ni and TIFSIX-2-Cu-i, 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 SIFSIX-3-Ni). 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.
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