Co oxidation: effect of Ce and Au addition on MnOx catalysts
- Autores
- Peluso, Miguel Andrés; Hernández Enciso, W. Y.; Dominguez, M. I.; Thomas, Horacio Jorge; Centeno, M. A.; Sambeth, Jorge Enrique
- Año de publicación
- 2012
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- The effect of cerium and/or gold addition to a manganese oxide which was greatly active in CO oxidation was studied. The catalysts obtained by this way were characterized by N2 adsorption, XRF, XRD and TPR, and their catalytic activity was measured in the CO oxidation reaction. The pure MnOx catalyst was active in the CO oxidation but the addition of 5 wt % cerium decreased their catalytic activity. Adding 2 wt % gold improved the activity of MnOx and Ce/MnOx and caused a slight decrease of the catalyst specific area and of the average oxidation state of manganese in catalysts, which was found between 3.3 and 3.6. The order of activity found on the basis of T50 for the four catalysts was: Au/MnOx > Au/Ce/MnOx > MnOx > Ce/MnOx, with T50 of 89, 95, 99 and 139 °C, respectively. The solids Au/MnOx and Au/Ce/MnOx presented a T10 of 30 and 49 °C, indicating that gold favored the conversion at room temperature. The effect of water vapor on the reaction was also analyzed, finding a decrease in the catalytic activity of all catalysts, due to the blocking of active sites in the catalyst surface.
Centro de Investigación y Desarrollo en Ciencias Aplicadas - Materia
-
Química
Co oxidation
Mnox
Cemnox
Au - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/104735
Ver los metadatos del registro completo
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Co oxidation: effect of Ce and Au addition on MnOx catalystsPeluso, Miguel AndrésHernández Enciso, W. Y.Dominguez, M. I.Thomas, Horacio JorgeCenteno, M. A.Sambeth, Jorge EnriqueQuímicaCo oxidationMnoxCemnoxAuThe effect of cerium and/or gold addition to a manganese oxide which was greatly active in CO oxidation was studied. The catalysts obtained by this way were characterized by N2 adsorption, XRF, XRD and TPR, and their catalytic activity was measured in the CO oxidation reaction. The pure MnOx catalyst was active in the CO oxidation but the addition of 5 wt % cerium decreased their catalytic activity. Adding 2 wt % gold improved the activity of MnOx and Ce/MnOx and caused a slight decrease of the catalyst specific area and of the average oxidation state of manganese in catalysts, which was found between 3.3 and 3.6. The order of activity found on the basis of T50 for the four catalysts was: Au/MnOx > Au/Ce/MnOx > MnOx > Ce/MnOx, with T50 of 89, 95, 99 and 139 °C, respectively. The solids Au/MnOx and Au/Ce/MnOx presented a T10 of 30 and 49 °C, indicating that gold favored the conversion at room temperature. The effect of water vapor on the reaction was also analyzed, finding a decrease in the catalytic activity of all catalysts, due to the blocking of active sites in the catalyst surface.Centro de Investigación y Desarrollo en Ciencias Aplicadas2012-10info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf351-358http://sedici.unlp.edu.ar/handle/10915/104735enginfo:eu-repo/semantics/altIdentifier/url/http://hdl.handle.net/11336/5870info:eu-repo/semantics/altIdentifier/issn/1851-8796info:eu-repo/semantics/altIdentifier/hdl/11336/5870info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-03T10:54:56Zoai:sedici.unlp.edu.ar:10915/104735Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-03 10:54:56.348SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Co oxidation: effect of Ce and Au addition on MnOx catalysts |
| title |
Co oxidation: effect of Ce and Au addition on MnOx catalysts |
| spellingShingle |
Co oxidation: effect of Ce and Au addition on MnOx catalysts Peluso, Miguel Andrés Química Co oxidation Mnox Cemnox Au |
| title_short |
Co oxidation: effect of Ce and Au addition on MnOx catalysts |
| title_full |
Co oxidation: effect of Ce and Au addition on MnOx catalysts |
| title_fullStr |
Co oxidation: effect of Ce and Au addition on MnOx catalysts |
| title_full_unstemmed |
Co oxidation: effect of Ce and Au addition on MnOx catalysts |
| title_sort |
Co oxidation: effect of Ce and Au addition on MnOx catalysts |
| dc.creator.none.fl_str_mv |
Peluso, Miguel Andrés Hernández Enciso, W. Y. Dominguez, M. I. Thomas, Horacio Jorge Centeno, M. A. Sambeth, Jorge Enrique |
| author |
Peluso, Miguel Andrés |
| author_facet |
Peluso, Miguel Andrés Hernández Enciso, W. Y. Dominguez, M. I. Thomas, Horacio Jorge Centeno, M. A. Sambeth, Jorge Enrique |
| author_role |
author |
| author2 |
Hernández Enciso, W. Y. Dominguez, M. I. Thomas, Horacio Jorge Centeno, M. A. Sambeth, Jorge Enrique |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Química Co oxidation Mnox Cemnox Au |
| topic |
Química Co oxidation Mnox Cemnox Au |
| dc.description.none.fl_txt_mv |
The effect of cerium and/or gold addition to a manganese oxide which was greatly active in CO oxidation was studied. The catalysts obtained by this way were characterized by N2 adsorption, XRF, XRD and TPR, and their catalytic activity was measured in the CO oxidation reaction. The pure MnOx catalyst was active in the CO oxidation but the addition of 5 wt % cerium decreased their catalytic activity. Adding 2 wt % gold improved the activity of MnOx and Ce/MnOx and caused a slight decrease of the catalyst specific area and of the average oxidation state of manganese in catalysts, which was found between 3.3 and 3.6. The order of activity found on the basis of T50 for the four catalysts was: Au/MnOx > Au/Ce/MnOx > MnOx > Ce/MnOx, with T50 of 89, 95, 99 and 139 °C, respectively. The solids Au/MnOx and Au/Ce/MnOx presented a T10 of 30 and 49 °C, indicating that gold favored the conversion at room temperature. The effect of water vapor on the reaction was also analyzed, finding a decrease in the catalytic activity of all catalysts, due to the blocking of active sites in the catalyst surface. Centro de Investigación y Desarrollo en Ciencias Aplicadas |
| description |
The effect of cerium and/or gold addition to a manganese oxide which was greatly active in CO oxidation was studied. The catalysts obtained by this way were characterized by N2 adsorption, XRF, XRD and TPR, and their catalytic activity was measured in the CO oxidation reaction. The pure MnOx catalyst was active in the CO oxidation but the addition of 5 wt % cerium decreased their catalytic activity. Adding 2 wt % gold improved the activity of MnOx and Ce/MnOx and caused a slight decrease of the catalyst specific area and of the average oxidation state of manganese in catalysts, which was found between 3.3 and 3.6. The order of activity found on the basis of T50 for the four catalysts was: Au/MnOx > Au/Ce/MnOx > MnOx > Ce/MnOx, with T50 of 89, 95, 99 and 139 °C, respectively. The solids Au/MnOx and Au/Ce/MnOx presented a T10 of 30 and 49 °C, indicating that gold favored the conversion at room temperature. The effect of water vapor on the reaction was also analyzed, finding a decrease in the catalytic activity of all catalysts, due to the blocking of active sites in the catalyst surface. |
| publishDate |
2012 |
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2012-10 |
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eng |
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eng |
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