Characterization and Catalytic Activity for the Oxidation of Ethane and Propane on Platinum and Copper Supported on CeO2/Al2O3
Ethane and propane oxidation on platinum and copper supported on Al2O3 and CeO2/Al2O3 catalysts were studied comparatively by examining reaction rates as a function of temperature. Results show that the addition of cerium oxide shifts the catalytic activity to higher temperatures. This negative infl...
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Brazilian Society of Chemical Engineering
1998-01-01
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Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321998000200017 |
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doaj-0e3ccb8e362c42dda0e4c6b2cd9598472020-11-24T22:50:27ZengBrazilian Society of Chemical EngineeringBrazilian Journal of Chemical Engineering0104-66321678-43831998-01-01152Characterization and Catalytic Activity for the Oxidation of Ethane and Propane on Platinum and Copper Supported on CeO2/Al2O3 Cataluña R.Marcilio N.R.Soria J.Cortés Corberán V.Martínez-Arias A.Ethane and propane oxidation on platinum and copper supported on Al2O3 and CeO2/Al2O3 catalysts were studied comparatively by examining reaction rates as a function of temperature. Results show that the addition of cerium oxide shifts the catalytic activity to higher temperatures. This negative influence is less pronounced in the case of supported copper samples, which on the basis of EPR and FTIR of adsorbed CO results is attributed to the low relative amount of this metal is in contact with ceria. The decrease in activity the presence of ceria might be due to changes in metal particle size or to the stabilization of the oxidized states of the metals, induced by their interactions with cerium oxide. The higher activity of platinum, in comparison with copper, is attributed to its higher reducibility along with an easier hydrocarbon activation on that metal.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321998000200017Catalytic activityoxidationcopper |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Cataluña R. Marcilio N.R. Soria J. Cortés Corberán V. Martínez-Arias A. |
spellingShingle |
Cataluña R. Marcilio N.R. Soria J. Cortés Corberán V. Martínez-Arias A. Characterization and Catalytic Activity for the Oxidation of Ethane and Propane on Platinum and Copper Supported on CeO2/Al2O3 Brazilian Journal of Chemical Engineering Catalytic activity oxidation copper |
author_facet |
Cataluña R. Marcilio N.R. Soria J. Cortés Corberán V. Martínez-Arias A. |
author_sort |
Cataluña R. |
title |
Characterization and Catalytic Activity for the Oxidation of Ethane and Propane on Platinum and Copper Supported on CeO2/Al2O3 |
title_short |
Characterization and Catalytic Activity for the Oxidation of Ethane and Propane on Platinum and Copper Supported on CeO2/Al2O3 |
title_full |
Characterization and Catalytic Activity for the Oxidation of Ethane and Propane on Platinum and Copper Supported on CeO2/Al2O3 |
title_fullStr |
Characterization and Catalytic Activity for the Oxidation of Ethane and Propane on Platinum and Copper Supported on CeO2/Al2O3 |
title_full_unstemmed |
Characterization and Catalytic Activity for the Oxidation of Ethane and Propane on Platinum and Copper Supported on CeO2/Al2O3 |
title_sort |
characterization and catalytic activity for the oxidation of ethane and propane on platinum and copper supported on ceo2/al2o3 |
publisher |
Brazilian Society of Chemical Engineering |
series |
Brazilian Journal of Chemical Engineering |
issn |
0104-6632 1678-4383 |
publishDate |
1998-01-01 |
description |
Ethane and propane oxidation on platinum and copper supported on Al2O3 and CeO2/Al2O3 catalysts were studied comparatively by examining reaction rates as a function of temperature. Results show that the addition of cerium oxide shifts the catalytic activity to higher temperatures. This negative influence is less pronounced in the case of supported copper samples, which on the basis of EPR and FTIR of adsorbed CO results is attributed to the low relative amount of this metal is in contact with ceria. The decrease in activity the presence of ceria might be due to changes in metal particle size or to the stabilization of the oxidized states of the metals, induced by their interactions with cerium oxide. The higher activity of platinum, in comparison with copper, is attributed to its higher reducibility along with an easier hydrocarbon activation on that metal. |
topic |
Catalytic activity oxidation copper |
url |
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0104-66321998000200017 |
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