Authors
PJ Jodłowski, RJ Jędrzejczyk, Anna Rogulska, Anna Wach, Piotr Kuśtrowski, Maciej Sitarz, Tomasz Łojewski, Andrzej Kołodziej, Joanna Łojewska
Publication date
2014/10/15
Journal
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy
Volume
131
Pages
696-701
Publisher
Elsevier
Description
The study deals with the XPS, Raman and EDX characterization of a series of structured catalysts composed of cobalt oxides promoted by palladium and cerium oxides. The aim of the work was to relate the information gathered from spectroscopic analyses with the ones from kinetic tests of methane combustion to establish the basic structure–activity relationships for the catalysts studied. The most active catalyst was the cobalt oxide doped with little amount of palladium and wins a confrontation with pure palladium oxide catalyst which is commercially used in converters for methane. The analyses Raman and XPS analyses showed that this catalyst is composed of a cobalt spinel and palladium oxide. The quantitative approach to the composition of the catalysts by XPS and EDX methods revealed that the surface of palladium doped cobalt catalyst is enriched with palladium oxide which provides a great number of …
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