Szczegóły publikacji
Opis bibliograficzny
Effect of cobalt promotion on hydrotalcite-derived nickel catalyst for $CO_{2}$ methanation / Paulina SUMMA, Katarzyna Świrk, Ye Wang, Bogdan SAMOJEDEN, Magnus Rønning, Changwei Hu, Monika MOTAK, Patrick Da Costa // Applied Materials Today ; ISSN 2352-9407. — 2021 — vol. 25 art. no. 101211, s. 1–14. — Bibliogr. s. 12–14, Abstr. — Publikacja dostępna online od: 2021-10-17. — P. Summa - dod. afiliacja: Sorbonne Université, France
Autorzy (8)
- AGHSumma Paulina
- Świrk Da Costa Katarzyna
- Wang Ye
- AGHSamojeden Bogdan
- Rønning Magnus
- Hu Changwei
- AGHMotak Monika
- da Costa Patrick
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 137697 |
|---|---|
| Data dodania do BaDAP | 2021-12-03 |
| Tekst źródłowy | URL |
| DOI | 10.1016/j.apmt.2021.101211 |
| Rok publikacji | 2021 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Applied Materials Today |
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 degrees 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.
