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DC Field | Value | Language |
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dc.citation.endPage | 2818 | - |
dc.citation.number | 12 | - |
dc.citation.startPage | 2810 | - |
dc.citation.title | CHEMSUSCHEM | - |
dc.citation.volume | 12 | - |
dc.contributor.author | Hiremath, Vishwanath | - |
dc.contributor.author | Kwon, Hyuk Jae | - |
dc.contributor.author | Jung, In-Sun | - |
dc.contributor.author | Kwon, Soonchul | - |
dc.contributor.author | Kwon, Sung Hyun | - |
dc.contributor.author | Lee, Seung Geol | - |
dc.contributor.author | Lee, Hyun Chul | - |
dc.contributor.author | Seo, Jeong Gil | - |
dc.date.accessioned | 2024-03-26T14:05:09Z | - |
dc.date.available | 2024-03-26T14:05:09Z | - |
dc.date.created | 2024-03-26 | - |
dc.date.issued | 2019-06 | - |
dc.description.abstract | Although MgO-Al2O3 is well known as having a spinel structure, the inversion of which occurs by exchange of the trivalent (Al3+) and divalent (Mg2+) cations, little analytical study of the degree of inversion has been carried out. This study concerns a simple methodology to identify the inversion by solid-state NMR spectroscopy, whereby its correlation with the CO2 capture capacity of MgO-rich MgO@MgO-Al2O3 spinel structures is verified. Through Al-27 and Mg-25 NMR spectroscopy, temperature-programmed CO2 desorption, and thermogravimetric analysis, higher inversion is found to occur at low Mg/Al ratios and the inversion is found to decrease as the Mg/Al ratio increases. Moreover, the degree of inversion correlates with CO2 sorption, which is associated with the medium-strength basic sites induced by formation of the unsaturated O2- species. These results will open new pathways to exploit defects in complex oxides beyond spinels and their derivatives for desired applications. This demonstration of MgO-Al2O3 for CO2 sorption can contribute to the design of future CO2 sorbents. | - |
dc.identifier.bibliographicCitation | CHEMSUSCHEM, v.12, no.12, pp.2810 - 2818 | - |
dc.identifier.doi | 10.1002/cssc.201900072 | - |
dc.identifier.issn | 1864-5631 | - |
dc.identifier.scopusid | 2-s2.0-85066009816 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/81842 | - |
dc.identifier.wosid | 000478761200040 | - |
dc.language | 영어 | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Mg-Ion Inversion in MgO@MgO−Al2O3 Oxides: The Origin of Basic Sites | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Green & Sustainable Science & Technology | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | carbon capture | - |
dc.subject.keywordAuthor | metal oxides | - |
dc.subject.keywordAuthor | sorbents | - |
dc.subject.keywordAuthor | spinel phases | - |
dc.subject.keywordAuthor | structure elucidation | - |
dc.subject.keywordPlus | CARBON-DIOXIDE CAPTURE | - |
dc.subject.keywordPlus | NANO-STRUCTURED MGO-AL2O3 | - |
dc.subject.keywordPlus | CO2 CAPTURE | - |
dc.subject.keywordPlus | MGAL2O4 SPINEL | - |
dc.subject.keywordPlus | CATION DISTRIBUTION | - |
dc.subject.keywordPlus | TEMPERATURE | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | COMPOSITE | - |
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