Impact on CO2/N2 and CO2/CH4 separation performance using Cu-BTC with supported ionic liquids-based mixed matrix membranes

Monteiro, Bernardo; Nabais, Ana R.; Casimiro, Maria H.; Martins, Ana P. S.; Francisco, Rute O.; Neves, Luísa A.; Pereira, Cláudia C. L.

http://hdl.handle.net/10362/58658

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Autores

Pereira, Cláudia C. L.

Resumo(s)

The efficient separation of gases has industrial, economic, and environmental importance. Here, we report the improvement in gas separation performance of a polyimide-based matrix (Matrimid®5218) filled with a Cu-based metal organic framework [MOF, Cu3(BTC)2] with two different ionic liquids (ILs) confined within the pores. The chosen ILs are commonly used in gas solubilization, 1-ethyl-3-methylimidazolium tetrafluoroborate ([EMIM][BF4]) and 1-Ethyl-3-methylimidazolium trifluoromethanesulfonate ([EMIM][OTf]), and the incorporation of the [EMIM][BF4]@Cu-BTC and [EMIM][OTf]@Cu-BTC composites in Matrimid®5218 proved to be an efficient strategy to improve the permeability and selectivity toward CO2/N2 and CO2/CH4 mixtures.

Descrição

PTDC/CTM-POL/2676/2014 IF/00505/2014 This work was performed under the project "SunStorage-Harvesting and storage of solar energy", with reference POCI-01-0145-FEDER-016387, funded by European Regional Development Fund (ERDF), through COMPETE 2020-Operational Programme for Competitiveness and Internationalization (OPCI), and by national funds, through FCT-Fundacao para a Ciencia e a Tecnologia I.P. This work was supported by the Associated Laboratory for Sustainable Chemistry-Clean Processes and Technologies-LAQV which is financed by national funds from FCT/MEC (UID/QUI/50006/2013) and cofinanced by the ERDF under the PT2020 Partnership Agreement (POCI-01-0145-FEDER-007265) The NMR spectrometers are part of The National NMR Facility, supported by Fundacao para a Ciencia e a Tecnologia (RECI/BBB-BQB/0230/2012). A.R.N. and L.A.N. acknowledge FCT/MCTES for financial support through project PTDC/CTM-POL/2676/2014 and FCT Investigator Contract IF/00505/2014, respectively. C2TN/IST authors gratefully acknowledge the Fundacao para a Ciencia e Tecnologia support through the UID/Multi/04349/2013 project.

Palavras-chave

Cu(BTC)2 Gas separation IL@Cu(BTC)2 IL@MOF Ionic liquids Metal-organic frameworks Mixed matrix membranes Chemical Engineering (miscellaneous) Process Chemistry and Technology Filtration and Separation