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Direct molecular interaction of CO2 with KTFSI dissolved in Pebax 2533 and their use in facilitated CO2 transport membranes

Title
Direct molecular interaction of CO2 with KTFSI dissolved in Pebax 2533 and their use in facilitated CO2 transport membranes
Author
강용수
Keywords
MIXED MATRIX MEMBRANES; METAL-ORGANIC FRAMEWORK; ELECTROLYTE MEMBRANES; SEPARATION; CAPTURE; EFFICIENT; CARRIER
Issue Date
2018-02
Publisher
ELSEVIER SCIENCE BV
Citation
JOURNAL OF MEMBRANE SCIENCE, v. 548, page. 358-362
Abstract
Polymer electrolyte membrane containing potassium bis(trifluoromethanesulfonyl) imide (KTFSI) dissolved in a polymeric solvent of Pebax 2533 demonstrated facilitated transport for effective CO2 separation. Reversible interactions of CO2 with both K+ and TFSI-dissolved in Pebax 2533 were directly observed by both solid state K-39 and C-13 NMR and FT-IR spectroscopy for the first time, inducing the CO2 carrier activity for the facilitated transport. Additionally, through comparing the CO2 separation performance of LiTF2N, NaTF2N and KTF2N, it was concluded that alkali cation has play an important role in helping to interact with CO2 for the CO2 carrier activity and that K+ was the best as a CO2 carrier among alkali metals used. Consequently, the KTFSI/Pebax 2533 polymer electrolyte membrane showed significant improvement of the CO2 separation performance due to the carrier action of both K+ and TFSI-in the solid state with long-term stability.
URI
https://www.sciencedirect.com/science/article/pii/S0376738817326327?via%3Dihubhttps://repository.hanyang.ac.kr/handle/20.500.11754/117450
ISSN
0376-7388; 1873-3123
DOI
10.1016/j.memsci.2017.11.039
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > ENERGY ENGINEERING(에너지공학과) > Articles
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