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Porous Alkaline‑Earth Doped Multiwall Carbon Nanotubes with Base Catalytic Properties

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dc.contributor.authorBarrios‑Bermúdez, N.
dc.contributor.authorSantos‑Granados, J
dc.contributor.authorCalvino‑Casilda, V
dc.contributor.authorCerpa‑Naranjo, A
dc.contributor.authorRojas‑Cervantes, M.L.
dc.contributor.authorMoreno, Rodrigo
dc.date.accessioned2024-05-20T11:58:03Z
dc.date.available2024-05-20T11:58:03Z
dc.date.issued2019-05-04
dc.description.abstractAlkaline-earth doped multiwall carbon nanotubes, M-CNT (M=Mg, Ca, Sr, Ba) have been prepared by a combined method of ionic exchange and precipitation. The wide characterization of the solids by nitrogen adsorption, ATR–FTIR, thermal analysis, XRD, scanning electron microscopy, transmission electron microscopy, point of zero charge (PZC), and X-ray photoelectron spectroscopy shows that the incorporation of M to the CNTs has been successfully produced. The doping with the alkaline-earth cations causes a decrease in the SBET value of the raw material, mainly due to the blockage of mesopores by the metal carbonate phase formed in most of cases. This metallic phase also contributes to the destabilization of the nanotubes by promoting their oxidation. According to PZC values, the acid character of oxidized CNTs changes to basic for the M-CNT series, Mg-CNT showing the highest PZC value. The basic properties of the catalysts have been tested in the C–C bond forming reaction of Knoevenagel, by carrying out the condensation of ethyl cyanoacetate with benzaldehyde or 4-methoxybenzaldehyde.en
dc.description.versionversión final
dc.identifier.doihttps://doi.org/10.1007/s10562-019-02807-6
dc.identifier.issn1011-372X; eISSN 1572-879X
dc.identifier.urihttps://hdl.handle.net/20.500.14468/12767
dc.journal.titleCatalysis Letters
dc.journal.volume149
dc.language.isoen
dc.publisherSpringer
dc.relation.centerFacultad de Ciencias
dc.relation.departmentQuímica Inorgánica y Química Técnica
dc.rightsAtribución-NoComercial-SinDerivadas 4.0 Internacional
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0
dc.subject.keywordsAlkaline-earth doped carbon nanotubes
dc.subject.keywordsSurface and Bulk characterization
dc.subject.keywordsBase catalysts
dc.titlePorous Alkaline‑Earth Doped Multiwall Carbon Nanotubes with Base Catalytic Propertieses
dc.typeartículoes
dc.typejournal articleen
dspace.entity.typePublication
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