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DC Field | Value | Language |
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dc.citation.endPage | 8671 | - |
dc.citation.number | 15 | - |
dc.citation.startPage | 8660 | - |
dc.citation.title | ACS CATALYSIS | - |
dc.citation.volume | 10 | - |
dc.contributor.author | Kim, Kwang Young | - |
dc.contributor.author | Lee, Hojeong | - |
dc.contributor.author | Noh, Woo Yeong | - |
dc.contributor.author | Shin, Jungho | - |
dc.contributor.author | Han, Seung Ju | - |
dc.contributor.author | Kim, Seok Ki | - |
dc.contributor.author | An, Kwangjin | - |
dc.contributor.author | Lee, Jae Sung | - |
dc.date.accessioned | 2023-12-21T17:09:29Z | - |
dc.date.available | 2023-12-21T17:09:29Z | - |
dc.date.created | 2020-09-11 | - |
dc.date.issued | 2020-08 | - |
dc.description.abstract | Monodisperse nanoparticles (NPs) of CoFe2O4 were synthesized as efficient catalyst precursors for CO2 hydrogenation to produce high value-added C-2-C-4 olefin products, which are important building blocks for the chemical industry. The resulting Na-promoted CoFe2O4 catalysts supported on carbon nanotubes (Na-CoFe2O4/CNT) exhibited high CO2 conversion (similar to 34%) and light olefin selectivity (similar to 39%), outperforming other reported Fe-based catalysts under similar reaction conditions. Their performance was superior to that of single-metal NP catalysts (Na-Fe3O4/CNT and Na-Co/CNT) and a physically mixed (Na-Fe3O(4) + Co)/CNT catalyst. The superior performance of the Na-CoFe2O4/CNT catalyst can be attributed to the facile formation of a unique bimetallic alloy carbide (Fe1-xCox)(5)C-2, which results in higher CO2 conversion and better selectivity toward light olefins in comparison with conventional chi-Fe5C2 active sites derived from Fe-only catalysts and significantly improved heavy hydrocarbon (C2+) formation in comparison with the Co2C sites of Co-only catalysts. The single-source precursor CoFe2O4 exclusively forms a single-phase alloy carbide promoted by the Na promoter, whereas the mixed (Na-Fe3O4 + Co) precursor forms an isolated Co phase with the alloy carbide phase, promoting undesirable CH4 formation. An optimal value of x <= 0.2 for (Fe1-xCox)(5)C-2 was predicted using the cluster expansion method and density functional theory, resulting in a stable bimetallic alloy structure. | - |
dc.identifier.bibliographicCitation | ACS CATALYSIS, v.10, no.15, pp.8660 - 8671 | - |
dc.identifier.doi | 10.1021/acscatal.0c01417 | - |
dc.identifier.issn | 2155-5435 | - |
dc.identifier.scopusid | 2-s2.0-85089664418 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/48221 | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/acscatal.0c01417 | - |
dc.identifier.wosid | 000562075000060 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Cobalt Ferrite Nanoparticles to Form a Catalytic Co-Fe Alloy Carbide Phase for Selective CO2 Hydrogenation to Light Olefins | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | spinet cobalt ferrite | - |
dc.subject.keywordAuthor | monodisperse nanoparticles | - |
dc.subject.keywordAuthor | CO2 hydrogenation catalyst | - |
dc.subject.keywordAuthor | bimetallic alloy carbide | - |
dc.subject.keywordAuthor | light olefins | - |
dc.subject.keywordPlus | FISCHER-TROPSCH SYNTHESIS | - |
dc.subject.keywordPlus | DENSITY-FUNCTIONAL THEORY | - |
dc.subject.keywordPlus | TOTAL-ENERGY CALCULATIONS | - |
dc.subject.keywordPlus | CARBON-DIOXIDE | - |
dc.subject.keywordPlus | FE5C2 NANOPARTICLES | - |
dc.subject.keywordPlus | SYNTHESIS GAS | - |
dc.subject.keywordPlus | ACTIVE PHASE | - |
dc.subject.keywordPlus | IRON CARBIDE | - |
dc.subject.keywordPlus | CONVERSION | - |
dc.subject.keywordPlus | CAPTURE | - |
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