Effects of La incorporation in catalytic activity of Ag/La-CeO2 catalysts for soot oxidation
DC Field | Value | Language |
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dc.contributor.author | Lee, J. | - |
dc.contributor.author | Lee, M.W. | - |
dc.contributor.author | Kim, M.J. | - |
dc.contributor.author | Lee, J.H. | - |
dc.contributor.author | Lee, E.J. | - |
dc.contributor.author | Jung, C. | - |
dc.contributor.author | Choung, J.W. | - |
dc.contributor.author | Kim, C.H. | - |
dc.contributor.author | Lee, K.-Y. | - |
dc.date.accessioned | 2021-12-01T21:41:36Z | - |
dc.date.available | 2021-12-01T21:41:36Z | - |
dc.date.created | 2021-08-31 | - |
dc.date.issued | 2021-07-15 | - |
dc.identifier.issn | 0304-3894 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/128719 | - |
dc.description.abstract | Owing to strengthened regulations toward vehicle emissions, the use of diesel particulate filter technology to reduce particulate matter emissions has attracted significant attention. To achieve low temperature oxidation of particulate matter, numerous studies on Ag/CeO2 catalysts for soot oxidation have been reported. Herein, Ag/La-CeO2 catalysts with different La contents are synthesized and compared to analyze the effect of La. Hydrogen temperature programmed reduction analysis confirms that the reducibility increases with an increase in the La content in La-CeO2. X-ray photoelectron spectroscopy and Raman analysis confirm an increase of oxygen vacancies with La doping. Accordingly, the soot oxidation performances estimated by temperature programmed oxidation experiments increase with La doping. However, the catalytic activity of Ag/La-CeO2 exhibits a volcano trend. When an appropriate amount of La is incorporated in Ag/CeO2, peroxide generation and reducibility improve, thereby enhancing the soot oxidation performance. Conversely, the catalytic activities gradually decrease with excess La-doping. Scanning transmission electron microscopy analysis and density functional theory calculations confirm that excess amounts of La induce the sintering of Ag particles, which lead to the degradation of peroxide generation and reducibility of the catalysts. Consequently, an optimal amount of La incorporation on Ag/La-CeO2 results in the best soot oxidation performance. © 2021 Elsevier B.V. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | Elsevier B.V. | - |
dc.subject | Catalytic oxidation | - |
dc.subject | Cerium oxide | - |
dc.subject | Density functional theory | - |
dc.subject | Dust | - |
dc.subject | High resolution transmission electron microscopy | - |
dc.subject | Lanthanum | - |
dc.subject | Lead metallography | - |
dc.subject | Oxidation | - |
dc.subject | Particles (particulate matter) | - |
dc.subject | Peroxides | - |
dc.subject | Scanning electron microscopy | - |
dc.subject | Silver compounds | - |
dc.subject | Silver metallography | - |
dc.subject | Sintering | - |
dc.subject | Soot | - |
dc.subject | Temperature | - |
dc.subject | X ray photoelectron spectroscopy | - |
dc.subject | Diesel particulate filters | - |
dc.subject | Hydrogen temperature programmed reduction | - |
dc.subject | Low-temperature oxidation | - |
dc.subject | Particulate Matter | - |
dc.subject | Particulate matter emissions | - |
dc.subject | Peroxide generations | - |
dc.subject | Scanning transmission electron microscopy | - |
dc.subject | Temperature programmed oxidation | - |
dc.subject | Catalyst activity | - |
dc.subject | catalysis | - |
dc.subject | catalyst | - |
dc.subject | cerium | - |
dc.subject | coating | - |
dc.subject | experimental study | - |
dc.subject | hydrogen | - |
dc.subject | oxidation | - |
dc.subject | silver | - |
dc.subject | soot | - |
dc.title | Effects of La incorporation in catalytic activity of Ag/La-CeO2 catalysts for soot oxidation | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, K.-Y. | - |
dc.identifier.doi | 10.1016/j.jhazmat.2021.125523 | - |
dc.identifier.scopusid | 2-s2.0-85101828140 | - |
dc.identifier.wosid | 000653034900005 | - |
dc.identifier.bibliographicCitation | Journal of Hazardous Materials, v.414 | - |
dc.relation.isPartOf | Journal of Hazardous Materials | - |
dc.citation.title | Journal of Hazardous Materials | - |
dc.citation.volume | 414 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalResearchArea | Environmental Sciences & Ecology | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Environmental Sciences | - |
dc.subject.keywordPlus | Catalytic oxidation | - |
dc.subject.keywordPlus | Cerium oxide | - |
dc.subject.keywordPlus | Density functional theory | - |
dc.subject.keywordPlus | Dust | - |
dc.subject.keywordPlus | High resolution transmission electron microscopy | - |
dc.subject.keywordPlus | Lanthanum | - |
dc.subject.keywordPlus | Lead metallography | - |
dc.subject.keywordPlus | Oxidation | - |
dc.subject.keywordPlus | Particles (particulate matter) | - |
dc.subject.keywordPlus | Peroxides | - |
dc.subject.keywordPlus | Scanning electron microscopy | - |
dc.subject.keywordPlus | Silver compounds | - |
dc.subject.keywordPlus | Silver metallography | - |
dc.subject.keywordPlus | Sintering | - |
dc.subject.keywordPlus | Soot | - |
dc.subject.keywordPlus | Temperature | - |
dc.subject.keywordPlus | X ray photoelectron spectroscopy | - |
dc.subject.keywordPlus | Diesel particulate filters | - |
dc.subject.keywordPlus | Hydrogen temperature programmed reduction | - |
dc.subject.keywordPlus | Low-temperature oxidation | - |
dc.subject.keywordPlus | Particulate Matter | - |
dc.subject.keywordPlus | Particulate matter emissions | - |
dc.subject.keywordPlus | Peroxide generations | - |
dc.subject.keywordPlus | Scanning transmission electron microscopy | - |
dc.subject.keywordPlus | Temperature programmed oxidation | - |
dc.subject.keywordPlus | Catalyst activity | - |
dc.subject.keywordPlus | catalysis | - |
dc.subject.keywordPlus | catalyst | - |
dc.subject.keywordPlus | cerium | - |
dc.subject.keywordPlus | coating | - |
dc.subject.keywordPlus | experimental study | - |
dc.subject.keywordPlus | hydrogen | - |
dc.subject.keywordPlus | oxidation | - |
dc.subject.keywordPlus | silver | - |
dc.subject.keywordPlus | soot | - |
dc.subject.keywordAuthor | Ag/La-CeO2 | - |
dc.subject.keywordAuthor | Diesel soot oxidation | - |
dc.subject.keywordAuthor | Oxygen vacancy | - |
dc.subject.keywordAuthor | Reducibility | - |
dc.subject.keywordAuthor | Sintering | - |
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