Szczegóły publikacji
Opis bibliograficzny
Effect of low loading of yttrium on Ni-based layered double hydroxides in $CO_{2}$ reforming of $CH_{4}$ / Katarzyna ŚWIRK, Monika MOTAK, Teresa GRZYBEK, Magnus Rønning, Patrick Da Costa // Reaction Kinetics, Mechanisms and Catalysis ; ISSN 1878-5190. — 2019 — vol. 126 iss. 2, s. 611-628. — Bibliogr. s. 625-628, Abstr. — Publikacja dostępna online od: 2018-12-07. — K. Świrk - dod. afiliacja: Sorbonne University
Autorzy (5)
- AGHŚwirk Katarzyna
- AGHMotak Monika
- AGHGrzybek Teresa
- Rønning Magnus
- Da Costa Patrick
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 121465 |
|---|---|
| Data dodania do BaDAP | 2019-05-21 |
| Tekst źródłowy | URL |
| DOI | 10.1007/s11144-018-1515-9 |
| Rok publikacji | 2019 |
| Typ publikacji | artykuł w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Reaction Kinetics, Mechanisms and Catalysis |
Abstract
Ni/Al/Mg layered double hydroxides (LDHs) modified with low loading of yttrium (0.2 and 0.4wt%) were used in dry reforming of methane at 700 degrees C. Physicochemical characterization, such as: X-ray fluorescence, N-2 sorption, X-ray diffraction, temperature programmed reduction in H-2, temperature programmed desorption of CO2, H-2 chemisorption, thermogravimetry analysis coupled by mass spectrometry and Raman spectroscopy, showed that the introduction of low loadings of yttrium lead to a smaller Ni degrees crystallite size, a decrease in reducibility of the nickel, and a decreased number of basic sites in the modified Ni/LDHs catalysts. The doping with 0.4wt% of Y improves catalytic activity resulting in higher CH4 and CO2 conversions at 700 degrees C, i.e., ca. 84% and ca. 87%, respectively with no clear deactivation observed after 5h run. The increase in CO2 conversion and a decrease of H-2/CO ratio indicates that side reactions occurs during DRM.
