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ZnO nanoparticles: An efficient catalyst for transesterification reaction of alpha-keto carboxylic esters

2020-05-15Journal article Restricted access
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dc.contributor.authorSoliman, Mohamed Mostafa Aboelhassan
dc.contributor.authorKarmakar, Anirban
dc.contributor.authorAlegria, Elisabete
dc.contributor.authorDa Costa Ribeiro, Ana Paula
dc.contributor.authorRubio, Guilherme
dc.contributor.authorSaraiva, Marta S.
dc.contributor.authorGuedes Da Silva, M. Fátima C.
dc.contributor.authorPombeiro, Armando
dc.date.accessioned2020-06-18T11:44:10Z
dc.date.available2020-06-18T11:44:10Z
dc.date.issued2020-05-15
dc.descriptionEste trabalho foi financiado pelo Concurso Anual para Projetos de Investigação, Desenvolvimento, Inovação e Criação Artística (IDI&CA) 2019 do Instituto Politécnico de Lisboa. Código de referência IPL/2019/STREAM_ISEL
dc.description.abstractPure ZnO nanoparticles were synthesized by a sustainable precipitation method using zinc nitrate and sodium hydroxide in aqueous medium at room temperature. They were characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM-EDX), thermogravimetric analysis (TGA), Fourier transform infrared spectroscopy (FTIR), ultraviolet-visible spectroscopy (UV-vis) spectroscopy and Brunauer-Emmett-Teller (BET) analysis. The XRD patterns indicate the formation of the hexagonal wurtzite phase with high purity and SEMEDS analysis confirm the purity and a homogenous distribution of the nanostructures. The ZnO nanostructures present plate-like agglomerates, resulting in a quasi-spherical morphology. The catalytic activity of the formed ZnO nanoparticles was evaluated towards the transesterification reaction of different carboxylic esters in the presence of various alcohols. This catalyst is highly selective for the transesterification of alpha-keto carboxylic ester (methyl benzoylformate) and leads to ca. 97% of product yield within 24 h of reaction time.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSOLIMAN, Mohamed M. A.; [et al] – ZnO nanoparticles: An efficient catalyst for transesterification reaction of alpha-keto carboxylic esters. Catalysis Today. ISSN 0920-5861. Vol. 348, SI (2020), pp. 72-79pt_PT
dc.identifier.doi10.1016/j.cattod.2019.08.053pt_PT
dc.identifier.issn0920-5861
dc.identifier.urihttp://hdl.handle.net/10400.21/11878
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPD/BD/114400/2016 - FCTpt_PT
dc.relationUID/QUI/00100/2019 - FCTpt_PT
dc.relationUID/MULTI/04046/2019 - FCTpt_PT
dc.relationPTDC/QUI-QIN/29778/2017 - FCTpt_PT
dc.relationProjeto financiado no âmbito do Concurso de Projetos de Investigação, Desenvolvimento, Inovação & Criação Artística (IDI&CA) financiados pelo Instituto Politécnico de Lisboa. IPL/2019/STREAM_ISELpt_PT
dc.relationIST-ID/107/2018 - ISTpt_PT
dc.relationIST-ID/119/2018 - ISTpt_PT
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dc.subjectZinc oxidept_PT
dc.subjectNanoparticlespt_PT
dc.subjectCatalysispt_PT
dc.subjectTransesterification reactionpt_PT
dc.subjectalpha-Keto carboxylic esterpt_PT
dc.titleZnO nanoparticles: An efficient catalyst for transesterification reaction of alpha-keto carboxylic esterspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage79pt_PT
oaire.citation.issueSIpt_PT
oaire.citation.startPage72pt_PT
oaire.citation.titleCatalysis Todaypt_PT
oaire.citation.volume348pt_PT
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person.givenNameElisabete
person.givenNameAna Paula
person.givenNameGuilherme
person.givenNameMarta
person.givenNameM. Fátima C.
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