Increasing resolution of selectivity in alkene hydrogenation via diffusion length in core-shell MFI zeolite
DC Field | Value | Language |
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dc.contributor.author | Jia, Xicheng | - |
dc.contributor.author | Jeong, Yanghwan | - |
dc.contributor.author | Baik, Hionsuck | - |
dc.contributor.author | Choi, Jungkyu | - |
dc.contributor.author | Yip, Alex C. K. | - |
dc.date.accessioned | 2021-09-02T06:25:46Z | - |
dc.date.available | 2021-09-02T06:25:46Z | - |
dc.date.created | 2021-06-16 | - |
dc.date.issued | 2018-09-15 | - |
dc.identifier.issn | 0920-5861 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/73098 | - |
dc.description.abstract | We designed a core-shell zeolite structure comprises of palladium-deposited ZSM-5 core and silicalite-1 (S-1) shell which favors selectivity towards light olefin in hydrogenation via increased diffusion length. A well designed S-1/Pd/ZSM-5 core-shell structure was prepared via secondary crystallization of S-1 layer on the Pd/ZSM-5 core. The catalytic and selectivity performance of the S-1/Pd/ZSM-5 composite was evaluated in catalytic hydrogenation of alkenes in liquid phase. The synthesized S-1/Pd/ZSM-5 gives a much higher selectivity towards 1-hexene (87%) over cyclohexene (13%) even though both reactants are able to enter the 10-membered ring channels of the core-shell structure. The zeolitic core-shell composite also showed an increasing selectivity towards 1-hexene over 1-heptene as the S-1 layers built up, even though both are linear alkenes with similar kinetic diameter that are accessible to the MFI framework. In this work, we demonstrate a strong correlation between the thickness of the S-1 shell layer and the selectivity towards light olefins due to faster mass transfer rate. The design of the core-shell MFI structure is a new example of how selectivity in a zeolite-catalyzed reaction can be changed and enhanced without relying on typical molecular size exclusion process. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.subject | CATALYTIC-REDUCTION | - |
dc.subject | HYDROTHERMAL STABILITY | - |
dc.subject | PARA-XYLENE | - |
dc.subject | CRYSTALS | - |
dc.subject | DECOMPOSITION | - |
dc.subject | N2O | - |
dc.subject | COMPOSITES | - |
dc.subject | OVERGROWTH | - |
dc.subject | METAL | - |
dc.subject | OXIDE | - |
dc.title | Increasing resolution of selectivity in alkene hydrogenation via diffusion length in core-shell MFI zeolite | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Choi, Jungkyu | - |
dc.identifier.doi | 10.1016/j.cattod.2018.02.014 | - |
dc.identifier.scopusid | 2-s2.0-85044756785 | - |
dc.identifier.wosid | 000436452800011 | - |
dc.identifier.bibliographicCitation | CATALYSIS TODAY, v.314, pp.94 - 100 | - |
dc.relation.isPartOf | CATALYSIS TODAY | - |
dc.citation.title | CATALYSIS TODAY | - |
dc.citation.volume | 314 | - |
dc.citation.startPage | 94 | - |
dc.citation.endPage | 100 | - |
dc.type.rims | ART | - |
dc.type.docType | Article; Proceedings Paper | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Applied | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | CATALYTIC-REDUCTION | - |
dc.subject.keywordPlus | HYDROTHERMAL STABILITY | - |
dc.subject.keywordPlus | PARA-XYLENE | - |
dc.subject.keywordPlus | CRYSTALS | - |
dc.subject.keywordPlus | DECOMPOSITION | - |
dc.subject.keywordPlus | N2O | - |
dc.subject.keywordPlus | COMPOSITES | - |
dc.subject.keywordPlus | OVERGROWTH | - |
dc.subject.keywordPlus | METAL | - |
dc.subject.keywordPlus | OXIDE | - |
dc.subject.keywordAuthor | MFI zeolite | - |
dc.subject.keywordAuthor | Core-shell structure | - |
dc.subject.keywordAuthor | Diffusion length | - |
dc.subject.keywordAuthor | Alkene hydrogenation | - |
dc.subject.keywordAuthor | Zeolite selectivity | - |
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