Journal
CHEMICAL ENGINEERING JOURNAL
Volume 279, Issue -, Pages 273-276Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2015.05.027
Keywords
1,3,5-Benzenetricarboxylic acid; Polymer; Membrane; CO2
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Funding
- Energy Efficiency & Resources of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) grant - Korean government Ministry of Trade, Industry and Energy [20122010100040]
- Basic Science Research Program through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [2015011603]
- Korea CCS R&D Center through the National Research Foundation of Korea (NRF) - Ministry of Science, ICT and Future Planning [NRF-2014M1A8A1049313]
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To achieve enhanced CO2/N-2 separation performance, 1,3,5-benzenetricarboxylic acid (H3BTC) was utilized in polymer composite membranes. Since H3BTC has three carboxylic acids on the benzene ring, the separation performance was expected to be enhanced by the synergistic effect of (1) the increased solubility of CO2 by dipole-dipole interactions between CO2 and carboxyl groups in H3BTC and (2) the barrier effect of H3BTC on the transport of N-2. Actually, when H3BTC was incorporated into poly(vinylpyrrolidone) (PVP), the selectivity of CO2/N-2 increased to 8.5 with a CO2 gas permeance of 1.2 GPU, while the neat PVP did not show separation performance. The chemical and physical behaviors of H3BTC in PVP were further investigated by FT-IR and TGA analyses. (C) 2015 Elsevier B.V. All rights reserved.
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