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Effect of methylation of ionic liquids on the gas separation performance of ionic liquid/metal-organic framework composites
- Source :
- Crystengcomm, CrystEngComm
- Publication Year :
- 2018
- Publisher :
- Royal Society of Chemistry (RSC), 2018.
-
Abstract
- [BMIM][PF6] and its methylated form, [BMMIM][PF6] were incorporated into CuBTC to examine the effect of methylation of ionic liquids (ILs) on the gas separation performance of the corresponding IL/metal–organic framework (MOF) composites.<br />1-N-Butyl-3-methylimidazolium hexafluorophosphate, [BMIM][PF6], and its methylated form, 1-N-butyl-2,3-dimethylimidazolium hexafluorophosphate, [BMMIM][PF6], were incorporated into CuBTC to examine the effect of methylation of ionic liquids (ILs) on the gas separation performance of the corresponding IL/metal–organic framework (MOF) composites. Spectroscopic analysis revealed that the interactions of the methylated ILs with CuBTC were weaker compared to those of its non-methylated counterpart. Gas uptake measurements illustrated that this difference in the interactions influences the gas separation performance of the composites. Accordingly, the CO2/N2: 15/85 and CH4/N2: 50/50 selectivities increased by 37% and 60% for [BMMIM][PF6]/CuBTC and 34% and 50% for [BMIM][PF6]/CuBTC, respectively, compared to the corresponding selectivities of pristine CuBTC at 1000 mbar. The results revealed another structural parameter controlling the performance of the IL/MOF composites, a novel type of material with rapidly expanding application areas.
- Subjects :
- Metal-organic framework
Stability limits
CO2 capture
COSMO-RS
CU-BTC
ZIF-8
Consequences
Cation
Spectroscopy
Selectivity
Chemistry
Crystallography
Gas uptake
02 engineering and technology
General Chemistry
010402 general chemistry
021001 nanoscience & nanotechnology
Condensed Matter Physics
01 natural sciences
0104 chemical sciences
Metal
chemistry.chemical_compound
Application areas
visual_art
Hexafluorophosphate
Ionic liquid
visual_art.visual_art_medium
General Materials Science
Gas separation
Composite material
0210 nano-technology
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- Crystengcomm, CrystEngComm
- Accession number :
- edsair.doi.dedup.....24f8ccdb92b07f0ae9dffd71f92f995d