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http://reini.utcv.edu.mx:80/handle/123456789/911
Title: | Improved Pd/g-Al2O3–Ce catalysts for benzene combustion |
Keywords: | Nanotecnología |
Issue Date: | 2008 |
Publisher: | Elsevier |
Abstract: | "The catalytic oxidation of benzene on Pd (0.5 wt%)/g-Al2O3–Ce catalysts with 1, 5 and 10 wt% Ce was investigated. The alumina–Ce supports were prepared by adding a Ce-nitrate precursor to an aluminum boehmite. The presence of Lewis acid sites was determined by FTIR-pyridine adsorption spectroscopy. By FTIR-CO adsorption, it was found that the presence of Ce leads to the stabilization of PdO on the supports. The presence of the PdO species on the Pd/g-Al2O3–Ce catalysts was confirmed by X-ray photoelectron spectroscopy (XPS). The combustion of benzene (2600 ppm) in air was carried out at atmospheric pressure. Two behaviors were observed: for the catalysts with low Ce content (1%) and without Ce, the combustion occurs in a broad temperature range 100–280 8C, meanwhile, catalysts with high Ce contents (5, 10%), the benzene combustion occurs in the range 220–280 8C. An activation treatment on Pd/g-Al2O3–Ce catalysts with a reactant mixture at 250 8C for 20 h reduces the temperature of the total combustion to 250 8C. A better stability on Pd/g-Al2O3–Ce catalysts containing 5 and 10% Ce was observed. " |
metadata.dc.identifier.*: | http://reini.utcv.edu.mx:80/handle/123456789/911 |
metadata.dc.language: | spa |
Appears in Collections: | Artículos arbitrados |
Files in This Item:
File | Description | Size | Format | |
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Artículo_Improved Pdg-Al2O3–Ce catalysts for benzene combustion.pdf | 465.61 kB | Adobe PDF | View/Open |
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