Development of etched SiO2@Pt@ZrO(2 )core-shell catalyst for CO and C3H6 oxidation at low temperature
DC Field | Value | Language |
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dc.contributor.author | Lee, Eun Jun | - |
dc.contributor.author | Seo, Yaeun | - |
dc.contributor.author | Park, Haney | - |
dc.contributor.author | Kim, Min June | - |
dc.contributor.author | Yoon, Dalyoung | - |
dc.contributor.author | Choung, Jin Woo | - |
dc.contributor.author | Kim, Chang Hwan | - |
dc.contributor.author | Choi, Jungkyu | - |
dc.contributor.author | Lee, Kwan-Young | - |
dc.date.accessioned | 2022-02-10T14:40:48Z | - |
dc.date.available | 2022-02-10T14:40:48Z | - |
dc.date.created | 2022-01-20 | - |
dc.date.issued | 2022-02-01 | - |
dc.identifier.issn | 0169-4332 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/135227 | - |
dc.description.abstract | In our previous study, we conducted CO oxidation with SiO2@Pd@CeO2 catalysts. However, the limit of the CeO2 shell thickness limited the thermal stability. So, in this study, thick ZrO2 shell was introduced to improve thermal stability. SiO2@Pt@ZrO2 catalysts were examined for the simultaneous oxidation of CO and hydrocarbons. SiO2@Pt@ZrO2 catalysts had improved thermal stability compared to Pt/SiO2 or Pt/ZrO2 after aging at 750 degrees C for 25 h. However, fresh SiO2@Pt@ZrO2 catalysts showed low oxidation activity because of the low gas accessibility due to the thick ZrO2 shell. Therefore, we proposed etched SiO2@Pt@ZrO2 catalysts for enhanced gas accessibility. The selective etching of SiO2 was adjusted by varying the KOH concentration. TEM images confirmed that the void space of the core-shell catalysts increased as the concentration of KOH increased. The exposed Pt surface area increased as the void space of the core-shell catalysts was increased. On the other hand, in excessively etched 3.2 M catalysts, the core-shell structure collapsed. Etched catalysts which maintain the core-shell structure improve thermal stability after hydrothermal aging. As a result, 1.6 M catalysts showed the best simultaneous oxidation of CO and hydrocarbons, and we confirmed that properly etched catalysts enhanced the oxidation activity and thermal stability. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER | - |
dc.subject | THERMAL-STABILITY | - |
dc.subject | SHELL | - |
dc.subject | PERFORMANCE | - |
dc.subject | ZRO2 | - |
dc.subject | NANOPARTICLES | - |
dc.subject | SUPPORT | - |
dc.subject | SPHERES | - |
dc.subject | IMPACT | - |
dc.subject | SIO2 | - |
dc.title | Development of etched SiO2@Pt@ZrO(2 )core-shell catalyst for CO and C3H6 oxidation at low temperature | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Lee, Kwan-Young | - |
dc.identifier.doi | 10.1016/j.apsusc.2021.151582 | - |
dc.identifier.scopusid | 2-s2.0-85118473499 | - |
dc.identifier.wosid | 000729439200001 | - |
dc.identifier.bibliographicCitation | APPLIED SURFACE SCIENCE, v.575 | - |
dc.relation.isPartOf | APPLIED SURFACE SCIENCE | - |
dc.citation.title | APPLIED SURFACE SCIENCE | - |
dc.citation.volume | 575 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalResearchArea | Physics | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Coatings & Films | - |
dc.relation.journalWebOfScienceCategory | Physics, Applied | - |
dc.relation.journalWebOfScienceCategory | Physics, Condensed Matter | - |
dc.subject.keywordPlus | THERMAL-STABILITY | - |
dc.subject.keywordPlus | SHELL | - |
dc.subject.keywordPlus | PERFORMANCE | - |
dc.subject.keywordPlus | ZRO2 | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | SUPPORT | - |
dc.subject.keywordPlus | SPHERES | - |
dc.subject.keywordPlus | IMPACT | - |
dc.subject.keywordPlus | SIO2 | - |
dc.subject.keywordAuthor | Simultaneous CO and hydrocarbon oxidation | - |
dc.subject.keywordAuthor | Etched SiO2 @Pt@ZrO2 | - |
dc.subject.keywordAuthor | Thermal stability | - |
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