Journal
CRYSTAL GROWTH & DESIGN
Volume 19, Issue 10, Pages 5829-5835Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.cgd.9b00850
Keywords
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Funding
- Welch Foundation [AX -1730]
- Distinguished Scientist Fellowship Program (DSFP) at KSU
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Separating acetylene (C2H2) from carbon dioxide (CO2) is highly challenging under mild conditions owing to their extreme similarity in molecular properties. Herein, a mot-type microporous metal-organic framework [Cu(BDC-Br)(H2O)(0.5)(DMF)(2.5)] (H2BDC-Br = 4-bromoisophthalic acid, DMF = N,N'-dimethylformamide) featuring a dicopper paddlewheel, has been evaluated for C2H2/CO2 separation. Gas sorption measurements have revealed this MOF exhibits considerable C2H2 uptake capacity with a C2H2/CO2 selectivity of 3.9 at room temperature and 1 atm. The separation performance was further illustrated by breakthrough experiments upon a 50/50 C2H2/CO2 mixture, suggesting the potential of this material for challenging separation of C2H2/CO2.
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