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The Effectiveness of Ni-Based Bimetallic Catalysts Supported by MgO-Modified Alumina in Dry Methane Reforming.
- Source :
- Catalysts (2073-4344); Nov2023, Vol. 13 Issue 11, p1420, 14p
- Publication Year :
- 2023
-
Abstract
- Syngas is produced through the carbon dioxide reforming of methane. The traditional nickel-based catalysts are substantially destroyed by carbon deposition. The reforming reaction was conducted in a tubular microreactor at 700 °C using bimetallic Ni catalysts supported over 37% Al<subscript>2</subscript>O<subscript>3</subscript> and 63% MgO mixtures. The impregnation process formed the catalysts, which were subsequently examined by N<subscript>2</subscript>-physisorption, XRD, H<subscript>2</subscript>-TPR, TGA, and Raman spectroscopy. The 2.5Ni+2.5Co/37%Al<subscript>2</subscript>O<subscript>3</subscript>+63%MgO bimetallic catalyst, which displayed 72% and 76% conversions of CH<subscript>4</subscript> and CO<subscript>2</subscript> over the course of a seven-hour procedure, was discovered to be the most active in DRM. The bimetallic catalyst with the largest weight loss in TGA, 2.5Ni+2.5Fe-MG63, had a loss of 61.3%, a difference of 26% and 21% in the activity performance of CH<subscript>4</subscript> and CO<subscript>2</subscript>, respectively, of the tested bimetallic Ni catalysts was recorded. The long-time of 30 h on-stream CH<subscript>4</subscript> and CO<subscript>2</subscript> conversion reactions for 2.5Ni+2.5Co-MG63 and 2.5Ni+2.5Ce-MG63 catalysts showed the catalysts' high stability. The TPO analysis for the 2.5Ni+2.5Cs-MG63 catalyst showed a peak at 650 °C, attributed to the oxidation of the filamentous carbon, whereas the TPO analysis for the 2.5Ni+2.5Co-MG63 catalyst depicted a peak at 540 °C, ascribed to the presence of amorphous/graphite carbon. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 20734344
- Volume :
- 13
- Issue :
- 11
- Database :
- Complementary Index
- Journal :
- Catalysts (2073-4344)
- Publication Type :
- Academic Journal
- Accession number :
- 173827574
- Full Text :
- https://doi.org/10.3390/catal13111420