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  4. Highly Active Sm2O3‐Ni Xerogel Catalysts for CO2 Methanation
 
Zitierlink DOI
10.26092/elib/2479
Verlagslink DOI
10.1002/cctc.201802049

Highly Active Sm2O3‐Ni Xerogel Catalysts for CO2 Methanation

Veröffentlichungsdatum
2019-01-10
Autoren
Ilsemann, Jan  
Sonström, Andrea  
Gesing, Thorsten M.  
Anwander, Reiner  
Bäumer, Marcus  
Zusammenfassung
We report on a new synthesis route for pure Sm2O3 and Sm2O3-Ni xerogels by modifying the well-known epoxide addition method. The resulting xerogels are used to prove the suitability of samaria as a highly effective catalyst support and to determine the optimal Ni loading. Therefore, a set of five catalysts with Ni loadings between 4 wt % and 89 wt % Ni was prepared and fully characterized by X-ray diffraction, N2 physisorption, transmission electron microscopy and H2 temperature-programmed reduction. Catalytic measurements reveal that the catalyst with 39 wt % Ni shows the best catalytic performance, outperforming even highly active literature known systems. Stability runs indicate that the catalyst deactivates independently of the Ni loading as well as conversion level over 600 min due to, most likely, carbonate formation. This deactivation, however, is reversible by a simple regeneration step. As shown by simultaneous CO2/CO methanation measurements, the Ni−Sm2O3 catalysts are also highly efficient for CO methanation. In this case, CO is preferentially converted to methane compared to CO2.
Schlagwörter
CO methanation

; 

CO2 methanation

; 

Ni catalyst

; 

rare earth metal oxide catalyst

; 

xerogel catalysts

; 

Mimenima
Verlag
Chemistry Europe
Institution
Universität Bremen  
Fachbereich
Fachbereich 02: Biologie/Chemie (FB 02)  
Zentrale Wissenschaftliche Einrichtungen und Kooperationen  
Institute
Institut für angewandte und physikalische Chemie (IAPC)  
Institut für Anorganische Chemie und Kristallographie  
MAPEX Center for Materials and Processes  
Dokumenttyp
Artikel/Aufsatz
Zeitschrift/Sammelwerk
ChemCatChem  
Band
11
Heft
6
Startseite
1732
Endseite
1741
Zweitveröffentlichung
Ja
Dokumentversion
Postprint
Lizenz
Alle Rechte vorbehalten
Sprache
Englisch
Dateien
Lade...
Vorschaubild
Name

J. Ilsemann, A. Sonström, T.M. Gesing, R. Anwander, M. Bäumer,_Highly Active Sm2O3-Ni Xerogel Catalysts_2019_accepted version_Deckblatt_pdfa1.pdf

Size

1.42 MB

Format

Adobe PDF

Checksum

(MD5):5e0ec7fec46310fe963b349824cbfcb9

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