| Autor: |
Zanchet, Daniela, Rodella, Cristiane B., Lopes, Laura J. S., Logli, Marco A., Vicentini, Valéria P., Wen Wen, Hanson, Jonathan C., Rodriguez, José A. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 1/29/2009, Vol. 1092 Issue 1, p25-28, 4p, 1 Graph |
| Abstrakt: |
The activation process and performance of Fe2O3 and an industrial Cu, Cr-Fe2O3 catalyst for the water-gas shift reaction were analysed by in situ time-resolved X-ray diffraction. We show that the catalytic activity in the case of Fe2O3 is related to the Fe2O3→Fe3O4 transformation. However, in the case of the industrial Cu, Cr-Fe2O3 catalyst, the presence of Cu has a major effect, and strongly increases the catalytic activity, even before the full transformation to Fe3O4 takes place. The smaller Fe3O4 crystalline domains, detected by diffraction, should also contribute to make the industrial Cu, Cr-Fe2O3 the most active catalyst. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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