Palladium-manganese catalysts supported on monolith systems for methane combustion
2008 (English)In: Applied Catalysis B: Environmental, ISSN 0926-3373, E-ISSN 1873-3883, Vol. 79, no 2, 122-131 p.Article in journal (Refereed) Published
Alumina-supported bimetallic and monometallic Mn and Pd monolithic catalysts were prepared and tested in methane combustion. Two different reactor configurations were adopted for catalyst testing, i.e. a fixed-bed laboratory-scale reactor and a pilot-plant reactor which allowed work at different temperatures and pressures. The results of catalyst performance showed that all bimetallic catalysts are considerably more stable for methane combustion than the monometallic palladium catalyst. With the aim to explain the relationship between activity-stability and structure and surface properties, the catalysts were characterized by TPO, XRD, XPS and ICP-AES. The high stability displayed by the bimetallic systems is attributed to the influence of manganese in retarding the decomposition of PdO into metallic palladium. Thus, it appears that manganese oxides inhibit PdO decomposition, as a consequence of the increase in oxygen mobility in the manganese oxide spinel phase.
Place, publisher, year, edition, pages
2008. Vol. 79, no 2, 122-131 p.
catalytic combustion, methane, palladium, manganese, monolith, alumina
Engineering and Technology
IdentifiersURN: urn:nbn:se:kth:diva-34109DOI: 10.1016/j.apcatb.2007.10.014ISI: 000253607400005ScopusID: 2-s2.0-38149043495OAI: oai:DiVA.org:kth-34109DiVA: diva2:419115
QC 201105252011-05-252011-05-252014-04-09Bibliographically approved