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Continuous supercritical solvothermal preparation of nanostructured ceria-zirconia as supports for dry methane reforming catalysts

hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorAUXÉMÉRY, Aimery
hal.structure.identifierInstitut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
dc.contributor.authorFRIAS, Brigitte Botello
hal.structure.identifierBoreskov Institute of Catalysis
dc.contributor.authorSMAL, Ekaterina
hal.structure.identifierFaculty of Chemistry
dc.contributor.authorDZIADEK, Katarzyna
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorPHILIPPOT, Gilles
hal.structure.identifierFaculty of Chemistry
dc.contributor.authorLEGUTKO, Piotr
hal.structure.identifierBoreskov Institute of Catalysis
dc.contributor.authorSIMONOV, Michail
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorTHOMAS, Sébastien
hal.structure.identifierFaculty of Chemistry
dc.contributor.authorADAMSKI, Andrzej
hal.structure.identifierBoreskov Institute of Catalysis
dc.contributor.authorSADYKOV, Vladislav
hal.structure.identifierInstitut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
dc.contributor.authorPARKHOMENKO, Ksenia
hal.structure.identifierInstitut de chimie et procédés pour l'énergie, l'environnement et la santé [ICPEES]
dc.contributor.authorROGER, Anne-Cecile
hal.structure.identifierInstitut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
dc.contributor.authorAYMONIER, Cyril
dc.date.issued2020-08
dc.identifier.issn0896-8446
dc.description.abstractEnThe nanostructured CexZr1-xO2 systems (0 ≤ x ≤ 0.75) were prepared combining alkoxide and nitrate precursors in an ethanol/water mixture by the continuous supercritical solvothermal sol-gel like synthesis. They were subsequently used as supports for nickel impregnation (10 wt.%) to obtain catalysts for dry reforming of methane (DRM) reaction. A reference CexZr1-xO2 (x = 0.50) system prepared via conventional coprecipitation method was used as a support for nickel impregnation in the comparative study of the nanostructured materials’ catalytic potential. The morphological and structural properties of the prepared nanostructured supports and Ni-containing catalysts were investigated by numerous techniques as XRD, Raman spectroscopy, SEM, TEM, EDS, chemisorption and others. The conditions of DRM reaction were chosen in order to compare the activity, the stability as well as the selectivity of coke formation in the presence of the prepared catalytic materials. It was found that the industrial catalyst leads to heavy coking in the chosen conditions with a rapid loss of activity. While the nanostructured CexZr1-xO2 (0 ≤ x ≤ 0.75) materials are found to be promising supports for Ni dispersion and coke control in DRM. In this study the nanostructured Ce0.50Zr0.50O2 material impregnated with nickel shown the highest TOF and the smallest selectivity of coke formation in DRM among other nanostructured materials. The continuous supercritical solvothermal method allows to prepare nanostructured mixed oxide materials that could be promising supports for different active metals dispersion and for coke control in the reactions where coking may be abundant.
dc.language.isoen
dc.publisherElsevier
dc.subject.enFlow synthesis
dc.subject.enSupercritical solvothermal synthesis
dc.subject.enDry reforming of methane
dc.subject.enCarbon dioxide valorization
dc.subject.enNanocatalysts
dc.subject.enNickel
dc.subject.enMixed oxides
dc.subject.enCeria-Zirconia
dc.title.enContinuous supercritical solvothermal preparation of nanostructured ceria-zirconia as supports for dry methane reforming catalysts
dc.typeArticle de revue
dc.identifier.doi10.1016/j.supflu.2020.104855
dc.subject.halChimie/Matériaux
bordeaux.journalJournal of Supercritical Fluids
bordeaux.page104855 (10 p.)
bordeaux.volume162
bordeaux.peerReviewedoui
hal.identifierhal-02570555
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02570555v1
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