Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9608086 | Applied Catalysis A: General | 2005 | 14 Pages |
Abstract
The results obtained revealed that the doping of Fe2O3/Al2O3 solids with different amounts of Au and Mn2O3 changed the degree of crystallinity of Al2O3 and Fe2O3 phases. The doping process led to a progressive increase in the specific surface area of the treated solid catalysts to an extent proportional to the amount of Au and Mn2O3 added. This process led also to a progressive increase in the catalytic activities of the investigated solid catalysts towards CO oxidation by O2 and H2O2 decomposition. The doping of solid catalysts with Au calcined at 300, 500 and 700 °C exhibited catalytic activity in CO oxidation by O2 higher than those measured for solid catalysts doped with Mn2O3 calcined at the same temperatures. Opposite results have been observed in case of H2O2 decomposition. These findings indicate that the active sites taking part in CO oxidation by O2 are different from those involved in H2O2 decomposition.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Nagi R.E. Radwan, E.A. El-Sharkawy, A.M. Youssef,