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EnglishThis work investigates the regeneration of S-poisoned Pd/Al2O3 and Pd/CeO2/Al2O3 catalysts under different CH4 containing atmospheres. Under lean combustion conditions in the presence of excess O-2, partial regeneration took place for both systems only above 750 degrees C after decomposition of stable sulphate species adsorbed on the support. Under alternate lean combustion/CH4-reducing pulse regeneration is markedly anticipated down to 550-600 degrees C. Experiments evidenced an effective role of certain preventing PdO from sulphation and in promoting regeneration via sulphates decomposition under reducing conditions.
| Titolo: | Regeneration treatments of S-poisoned Pd/Al2O3 and Pd/CeO2/Al2O3 catalysts for the combustion of methane | |
| Autori: | ||
| Data di pubblicazione: | 2007 | |
| Rivista: | ||
| Abstract: | This work investigates the regeneration of S-poisoned Pd/Al2O3 and Pd/CeO2/Al2O3 catalysts under different CH4 containing atmospheres. Under lean combustion conditions in the presence of excess O-2, partial regeneration took place for both systems only above 750 degrees C after decomposition of stable sulphate species adsorbed on the support. Under alternate lean combustion/CH4-reducing pulse regeneration is markedly anticipated down to 550-600 degrees C. Experiments evidenced an effective role of certain preventing PdO from sulphation and in promoting regeneration via sulphates decomposition under reducing conditions. | |
| Handle: | http://hdl.handle.net/11390/858206 | |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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