Enhancement of CO2 Affinity in a Polymer of Intrinsic Microporosity by Amine Modification
| Autor: | Johannes C. Jansen, Peter M. Budd, Marek Lanč, Karel Friess, Kane W. J. Heard, Gabriele Clarizia, Louise Maynard-Atem, Bekir Satilmis, Paola Bernardo, Christopher R. Mason |
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| Rok vydání: | 2014 |
| Předmět: |
chemistry.chemical_classification
Polymers and Plastics Nitrile Diffusion diffusion Organic Chemistry Sorption Polymer Borane Permeation Article Inorganic Chemistry chemistry.chemical_compound Adsorption chemistry Chemical engineering Polymer of Intrinsic Microporosity Polymer chemistry Materials Chemistry Amine gas treating gas separation membrane Amine-PIM-1 |
| Zdroj: | Macromolecules 47 (2014): 1021–1029. doi:10.1021/ma401869p info:cnr-pdr/source/autori:Mason, Christopher R.; Maynard-Atem, Louise; Heard, Kane W J; Satilmis, Bekir; Budd, Peter M.; Friess, Karel; Lanc, Marek; Bernardo, Paola; Clarizia, Gabriele; Jansen, Johannes Carolus/titolo:Enhancement of CO2 affinity in a polymer of intrinsic microporosity by amine modification/doi:10.1021%2Fma401869p/rivista:Macromolecules (Print)/anno:2014/pagina_da:1021/pagina_a:1029/intervallo_pagine:1021–1029/volume:47 |
| ISSN: | 1520-5835 0024-9297 |
| DOI: | 10.1021/ma401869p |
| Popis: | 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/N2 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 H2/CO2 gas pair, whereas PIM-1 favors CO2, amine–PIM-1 shows permselectivity toward H2, breaking the Robeson 2008 upper bound. |
| Databáze: | OpenAIRE |
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