Szczegóły publikacji
Opis bibliograficzny
Why is calcium an effective promoter for plasma $CO_{2}$ methanation over polymer P123-modified NiMgAlOx-mixed oxide catalysts? / Minh Nguyen-Quang, Federico Azzolina-Jury, Bogdan SAMOJEDEN, Monika MOTAK, Patrick Da Costa // Applied Catalysis. B, Environmental ; ISSN 0926-3373. — 2023 — vol. 336 art. no. 122952, s. 1–11. — Bibliogr. s. 9–11, Abstr. — Publikacja dostępna online od: 2023-06-01. — M. Nguyen-Quang - dod. afiliacje: CNRS-ENSICAEN-Université de Caen, France ; Sorbonne Université, France
Autorzy (5)
- AGHNguyen-Quang Minh
- Azzolina-Jury Federico
- AGHSamojeden Bogdan
- AGHMotak Monika
- da Costa Patrick
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 147110 |
|---|---|
| Data dodania do BaDAP | 2023-07-18 |
| DOI | 10.1016/j.apcatb.2023.122952 |
| Rok publikacji | 2023 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Applied Catalysis, B, Environmental |
Abstract
This work demonstrated the impact of Ca and Ba on the properties and activity of Polymer P123-modified NiMgAlOx-mixed oxide catalysts over thermal and plasma CO2 methanation. Both elements influenced the basicity and redox properties of the 3 P-NMA catalyst. Although the high CO2 affinity of the promoted-Ca catalyst limited its low-temperature performance, the plasma tests revealed efficient conversion of carbonates to methane, attributed to the presence of highly energetic electrons. Ni15Ba1 demonstrated notable effectiveness in conventional tests (XCO2 = 80.5%, SCH4 = 99.7%, at 250ºC), meanwhile, Ni15Ca1 displayed a significant enhancement in plasma (XCO2 = 86.8%, SCH4 ≈ 100%, at 24.8 W discharge power), with 73.5% of energy efficiency, the highest reported. Both catalysts showed increased conversion to 88–89% at 300ºC. Operando FTIR measurements uncovered the different intermediates under thermal and plasma conditions. The Ca concentration was optimized at 1 wt% for plasma performance, likely due to the strong adsorption capacity of Ca and the catalyst dielectric constant.
