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DC Field | Value | Language |
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dc.citation.endPage | 7333 | - |
dc.citation.number | 10 | - |
dc.citation.startPage | 7325 | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 6 | - |
dc.contributor.author | Saleh, Muhammad | - |
dc.contributor.author | Lee, Han Myoung | - |
dc.contributor.author | Kemp, K. Christian | - |
dc.contributor.author | Kim, Kwang S. | - |
dc.date.accessioned | 2023-12-22T02:40:53Z | - |
dc.date.available | 2023-12-22T02:40:53Z | - |
dc.date.created | 2014-06-23 | - |
dc.date.issued | 2014-05 | - |
dc.description.abstract | The largest obstacles for landfill/flue gas separation using microporous materials are small adsorption values and low selectivity ratios. This study demonstrates that these adsorption and selectivity challenges can be overcome by utilizing a series of hyper-cross-linked heterocyclic polymer networks. These microporous organic polymers (MOPs) were synthesized in a single step by inexpensive Friedel-Crafts-catalyzed reactions using dimethoxymethane as an external linker. The amorphous networks show moderate Brunauer-Emmett-Teller surface areas up to 1022 m2 g-1, a narrow pore size distribution in the range from 6 to 8 Å, and high physicochemical stability. Owing to the presence of the heteroatomic pore surfaces in the networks, they exhibit maximum storage capacities for CO2 of 11.4 wt % at 273 K and 1 atm. Additionally, remarkable selectivity ratios for CO 2 adsorption over N2 (100) and CH4 (15) at 273 K were obtained. More importantly, as compared with any other porous materials, much higher selectivity for CO2/N2 (80) and CO 2/CH4 (15) was observed at 298 K, showing that these selectivity ratios remain high at elevated temperature. The very high CO 2/N2 selectivity values are ascribed to the binding affinity of abundantly available electron-rich basic heteroatoms, high CO 2 isoteric heats of adsorption (49-38 kJ mol-1), and the predominantly microporous nature of the MOPs. Binding energies calculated using the high level of ab initio theory showed that the selectivity is indeed attributed to the heteroatom-CO2 interactions. By employing an easy and economical synthesis procedure these MOPs with high thermochemical stability are believed to be a promising candidate for selective CO2 capture. | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.6, no.10, pp.7325 - 7333 | - |
dc.identifier.doi | 10.1021/am500728q | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.scopusid | 2-s2.0-84901659731 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/5009 | - |
dc.identifier.url | http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=84901659731 | - |
dc.identifier.wosid | 000336639200043 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Highly Stable CO2/N-2 and CO2/CH4 Selectivity in Hyper-Cross-Linked Heterocyclic Porous Polymers | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics; Materials Science | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
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