Effect of sulfur oxides on surface state and carbon monoxide oxidation activity of CuxZn1-xCr2O4 mixed oxides

Autor: Ana Terlecki-Baricevic, Dušan Jovanović, Tsvetana Marinova, Boško Grbić, Plamen Kirilov-Stefanov
Rok vydání: 1994
Předmět:
Zdroj: Applied Catalysis A: General. 108:115-122
ISSN: 0926-860X
Popis: The effect of mixed sulfur oxides pretreatment on the surface state and carbon monoxide oxidation activity of Cu x Zn 1− x Cr 2 O 4 mixed oxides, has been investigated using X-ray photoelectron spectroscopy (XPS) and kinetic measurements. The results obtained indicate that SO x species bind preferentially to the surface zinc ions, which thus protect from poisoning the surface copper ions which are the active species for carbon monoxide oxidation.
Databáze: OpenAIRE