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http://hdl.handle.net/10773/35717
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DC Field | Value | Language |
---|---|---|
dc.contributor.author | Gomes, Diana M. | pt_PT |
dc.contributor.author | Neves, Patrícia | pt_PT |
dc.contributor.author | Antunes, Margarida M. | pt_PT |
dc.contributor.author | Fernandes, António J. S. | pt_PT |
dc.contributor.author | Pillinger, Martyn | pt_PT |
dc.contributor.author | Valente, Anabela A. | pt_PT |
dc.date.accessioned | 2023-01-10T15:48:53Z | - |
dc.date.available | 2023-01-10T15:48:53Z | - |
dc.date.issued | 2022-12 | - |
dc.identifier.issn | 2073-4344 | pt_PT |
dc.identifier.uri | http://hdl.handle.net/10773/35717 | - |
dc.description.abstract | Olefin epoxidation is an important transformation for the chemical valorization of olefins, which may derive from renewable sources or domestic/industrial waste. Different post-synthesis strategies were employed to introduce molybdenum species into mesostructured and hierarchical micro-mesoporous catalysts of the type TUD-1 and BEA, respectively, to confer epoxidation activity for the conversion of relatively bulky olefins (e.g., biobased methyl oleate, DL-limonene) to epoxide products, using tert-butyl hydroperoxide as an oxidant. The influences of (i) the type of metal precursor, (ii) type of post-synthesis impregnation method, (iii) type of support and (iv) top-down versus bottom-up synthesis methodologies were studied to achieve superior catalytic performances. Higher epoxidation activity was achieved for a material prepared via (post-synthesis) incipient wetness impregnation of MoO2(acac)2 (acac = acetylacetonate) on (pre-treated) siliceous TUD-1 and calcination; for example, methyl oleate was converted to the corresponding epoxide with 100% selectivity at 89% conversion (70 °C). Catalytic and solid-state characterization studies were conducted to shed light on material stability phenomena. | pt_PT |
dc.language.iso | eng | pt_PT |
dc.publisher | MDPI | pt_PT |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDB%2F50011%2F2020/PT | pt_PT |
dc.relation | info:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UIDP%2F50011%2F2020/PT | pt_PT |
dc.relation | LA/P/0006/2020 | pt_PT |
dc.relation | grant ref. 2021.04756.BD | pt_PT |
dc.rights | openAccess | pt_PT |
dc.rights.uri | https://creativecommons.org/licenses/by/4.0/ | pt_PT |
dc.subject | Catalytic epoxidation | pt_PT |
dc.subject | Olefins | pt_PT |
dc.subject | Porous materials | pt_PT |
dc.subject | Hierarchical zeolite | pt_PT |
dc.subject | Ordered mesoporous silica | pt_PT |
dc.subject | Molybdenum | pt_PT |
dc.title | Post-Synthesis Strategies to Prepare Mesostructured and Hierarchical Silicates for Liquid Phase Catalytic Epoxidation | pt_PT |
dc.type | article | pt_PT |
dc.description.version | published | pt_PT |
dc.peerreviewed | yes | pt_PT |
degois.publication.issue | 12 | pt_PT |
degois.publication.title | Catalysts | pt_PT |
degois.publication.volume | 12 | pt_PT |
dc.identifier.doi | 10.3390/catal12121513 | pt_PT |
dc.identifier.articlenumber | 1513 | pt_PT |
Appears in Collections: | CICECO - Artigos DFis - Artigos DQ - Artigos I3N-FSCOSD - Artigos |
Files in This Item:
File | Description | Size | Format | |
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catalysts-12-01513.pdf | 7.84 MB | Adobe PDF | View/Open |
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