dc.contributor.author | Summa, Paulina | |
dc.contributor.author | Swirk, Katarzyna | |
dc.contributor.author | Wang, Ye | |
dc.contributor.author | Samojeden, Bogdan | |
dc.contributor.author | Rønning, Magnus | |
dc.contributor.author | Hu, Changwei | |
dc.contributor.author | Motak, Monika | |
dc.contributor.author | Da Costa, Patrick | |
dc.date.accessioned | 2022-04-06T11:01:09Z | |
dc.date.available | 2022-04-06T11:01:09Z | |
dc.date.created | 2022-01-19T22:54:12Z | |
dc.date.issued | 2021 | |
dc.identifier.issn | 2352-9407 | |
dc.identifier.uri | https://hdl.handle.net/11250/2990168 | |
dc.description.abstract | A 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.language.iso | eng | en_US |
dc.publisher | Elsevier | en_US |
dc.rights | Attribution-NonCommercial-NoDerivatives 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by-nc-nd/4.0/deed.no | * |
dc.title | Effect of cobalt promotion on hydrotalcite-derived nickel catalyst for CO2 methanation | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.rights.holder | This is the authors' accepted manuscript to an article published by Elsevier. Locked until 17.10.2023 due to copyright restrictions. | en_US |
dc.source.journal | Applied Materials Today | en_US |
dc.identifier.doi | 10.1016/j.apmt.2021.101211 | |
dc.identifier.cristin | 1985532 | |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |