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dc.contributor.authorSumma, Paulina
dc.contributor.authorSwirk, Katarzyna
dc.contributor.authorWang, Ye
dc.contributor.authorSamojeden, Bogdan
dc.contributor.authorRønning, Magnus
dc.contributor.authorHu, Changwei
dc.contributor.authorMotak, Monika
dc.contributor.authorDa Costa, Patrick
dc.description.abstractA series of cobalt-promoted Ni-Mg-Al hydrotalcite-derived catalysts were tested towards CO2 methanation reaction. The best among examined catalysts was the one with 1 wt% of cobalt in fresh hydrotalcite, obtaining 77% of CO2 conversion and 99% of CH4 selectivity at 300 °C. Above that temperature, the catalyst was working with-near-equilibrium parameters. It was also stable for up to 24 h on stream. Other cobalt-containing samples were likewise very active and selective during the time on stream. Due to the use of a low amount of cobalt (0.5–4 wt%) the Co-Ni alloy was not the subject of research – both materials formed probably solid solution of cobalt in the nickel matrix. Although the behavior of cobalt as a textural and electronic promoter was confirmed. Co was found to improve reducibility of nickel species, hydrogen uptake, and the acidic/basic properties by increasing the number of medium strength and strong basic sites. Tendency to sintering of nickel crystallites on cobalt-promoted catalysts was not confirmed in this study, however, with increased content of Co, bigger metal crystallites were formed under the reduction conditions.en_US
dc.rightsAttribution-NonCommercial-NoDerivatives 4.0 Internasjonal*
dc.titleEffect of cobalt promotion on hydrotalcite-derived nickel catalyst for CO2 methanationen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.rights.holderThis is the authors' accepted manuscript to an article published by Elsevier. Locked until 17.10.2023 due to copyright restrictions.en_US
dc.source.journalApplied Materials Todayen_US

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Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal
Except where otherwise noted, this item's license is described as Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal