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Enhancement of CO2 Affinity in a Polymer of Intrinsic Microporosity by Amine Modification        
Yazarlar
Christopher R. Mason
Louise Maynard-Atem
Kane W. J. Heard
Doç. Dr. Bekir SATILMIŞ
Türkiye
Peter M. Budd
Karel Friess
Marek Lanc
Paola Bernardo
Gabriele Clarizia
Johannes C. Jansen
Özet
Nitrile groups in the polymer of intrinsic microporosity PIM-1 were reduced to primary amines using borane complexes. In adsorption experiments, the novel amine PIM-1 showed higher CO2 uptake and higher CO2/N-2 sorption selectivity than the parent polymer, with very evident dual-mode sorption behavior. In gas permeation with six light gases, the individual contributions of solubility and diffusion to the overall permeability was determined via time-lag analysis. The high CO2 affinity drastically restricts diffusion at low pressures and lowers CO2 permeability compared to the parent PIM-1. Furthermore, the size-sieving properties of the polymer are increased, which can be attributed to a higher stiffness of the system arising from hydrogen bonding of the amine groups. Thus, for the H-2/CO2 gas pair, whereas PIM-1 favors CO2, amine-PIM-1 shows permselectivity toward H-2, breaking the Robeson 2008 upper bound.
Anahtar Kelimeler
Makale Türü Özgün Makale
Makale Alt Türü SSCI, AHCI, SCI, SCI-Exp dergilerinde yayımlanan tam makale
Dergi Adı MACROMOLECULES
Dergi ISSN 0024-9297
Dergi Tarandığı Indeksler SCI-Expanded
Makale Dili İngilizce
Basım Tarihi 01-2014
Cilt No 47
Sayı 3
Sayfalar 1021 / 1029
Doi Numarası 10.1021/ma401869p
Makale Linki https://pubs.acs.org/doi/abs/10.1021/ma401869p