Journal
MICROPOROUS AND MESOPOROUS MATERIALS
Volume 316, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.micromeso.2021.110947
Keywords
Metal organic frameworks (MOFs); Ionic liquids (ILs); Composite materials; CO2 separation
Categories
Funding
- Scientific and Technological Research Council of Turkey (TUBITAK) [114R093]
- Koc University Seed Fund Program
- European Research Council (ERC) under the European Union [756489-COSMOS]
- Koc University TUPRAS Energy Center (KUTEM)
- Koc University Surface Science and Technology Center (KUYTAM)
- TARLA
- HEC Pakistan Scholarship
- METU Mustafa Parlar Foundation of Science and Education Incentive Award
- ERC-2017-Starting Grant
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Incorporating [EMIM][DEP] into CuBTC was found to enhance the CO2 separation performance by increasing the selectivity of CuBTC towards CO2, with ideal selectivities being significantly improved compared to pristine CuBTC.
1-ethyl-3-methylimidazolium diethyl phosphate ([EMIM][DEP]) was incorporated into copper benzene-1,3,5tricarboxylate, CuBTC. Consequences of molecular interactions on the CO2 separation performance of CuBTC were investigated. Scanning electron microscopy and X-ray diffraction results showed that the surface morphology and crystal structure of CuBTC remained intact upon the incorporation of the ionic liquid (IL); and the results of thermogravimetric analysis and infrared spectroscopy indicated the presence of interactions between the anion of the IL and the open metal sites of CuBTC. Gas adsorption measurements for the pristine CuBTC and IL-incorporated CuBTC were performed at 25 degrees C in a pressure range of 0.1-1 bar. Data showed that ideal CO2/CH4 and CO2/N-2 selectivities of IL-incorporated CuBTC were 1.6- and 2.4-times higher compared to those of the pristine CuBTC at 0.01 bar, respectively. Moreover, for the CO2/CH4:50/50 and CO2/N-2:15/85 mixtures, the corresponding selectivities were improved by more than 1.5- and 1.9-times compared to that of pristine CuBTC at 0.01 bar, respectively.
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