Efficient CO2 Removal for Ultra-Pure CO Production by Two Hybrid Ultramicroporous Materials

Kai Jie Chen, Qing Yuan Yang, Susan Sen, David G. Madden, Amrit Kumar, Tony Pham, Katherine A. Forrest, Nobuhiko Hosono, Brian Space, Susumu Kitagawa, Michael J. Zaworotko

Research output: Contribution to journalArticlepeer-review

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), 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.

Original languageEnglish
Pages (from-to)3332-3336
Number of pages5
JournalAngewandte Chemie - International Edition
Volume57
Issue number13
DOIs
Publication statusPublished - 19 Mar 2018

Keywords

  • CO production
  • CO capture
  • gas separation
  • hybrid ultramicroporous materials
  • trace CO removal

Fingerprint

Dive into the research topics of 'Efficient CO2 Removal for Ultra-Pure CO Production by Two Hybrid Ultramicroporous Materials'. Together they form a unique fingerprint.

Cite this