Influence of co-metals on bimetallic palladium catalysts for methane combustion
2005 (English)In: Journal of Catalysis, ISSN 0021-9517, E-ISSN 1090-2694, Vol. 231, 139-150 p.Article in journal (Refereed) Published
The catalytic combustion of methane has been investigated over eight different bimetallic palladium catalysts, comprising the co-metals Co, Rh, Ir, Ni, Pt, Cu, Ag, or An. The catalysts were characterized by TEM, EDS, PXRD, and temperature-programmed oxidation (TPO). It was found that a catalyst containing both Pd and Pt was the most promising, as it had a high activity that did not decline with time. The catalyst containing Pd and Ag was also a promising candidate, but its activity was slightly lower. For PdCo and PdNi, the co-metals formed spinel structures with the alumina support, with the result that the co-metals did not affect the combustion performance of palladium. For PdRh, PdIr, PdCu, and PdAg, the co-metals formed separate particles consisting of the corresponding metal oxide. These catalysts, except PdRh, showed a stable activity. For PdPt and PdAu, the co-metals formed alloys with palladium, and both catalysts showed a stable activity.
Place, publisher, year, edition, pages
2005. Vol. 231, 139-150 p.
palladium, bimetal, methane, catalytic combustion, TEM, EDS, PXRD, TPO
IdentifiersURN: urn:nbn:se:kth:diva-6559DOI: 10.1016/j.jcat.2005.01.001ISI: 000228435300014ScopusID: 2-s2.0-15944423298OAI: oai:DiVA.org:kth-6559DiVA: diva2:11305
QC 201009152006-12-112006-12-112010-09-15Bibliographically approved