The activity of ALD-prepared PtCo catalysts for ethanol oxidation in alkaline media
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Título: | The activity of ALD-prepared PtCo catalysts for ethanol oxidation in alkaline media |
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Autor/es: | Santasalo-Aarnio, Annukka | Sairanen, Emma | Arán-Ais, Rosa M. | Figueiredo, Marta C. | Hua, Jiang | Feliu, Juan M. | Lehtonen, Juha | Karinen, Reetta | Kallio, Tanja |
Grupo/s de investigación o GITE: | Electroquímica de Superficies |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Química Física | Universidad de Alicante. Instituto Universitario de Electroquímica |
Palabras clave: | Ethanol oxidation | ALD | PtCo catalyst | Temperature dependency | DEFC | Alkaline media | FTIR | Arrhenius plot |
Área/s de conocimiento: | Química Física |
Fecha de publicación: | ene-2014 |
Editor: | Elsevier |
Cita bibliográfica: | Journal of Catalysis. 2014, 309: 38-48. doi:10.1016/j.jcat.2013.08.027 |
Resumen: | Controlled bimetallic catalyst materials can be obtained using atomic layer deposition (ALD) method. In this paper, this method was applied to prepare Pt, PtCo, and PtCoPt nanoparticle catalysts on carbon support. Their activity for ethanol oxidation was studied by various electrochemical methods and the dependency of the reaction on temperature and mass transfer was evaluated. In addition, FTIR analysis was performed to confirm the reaction products. The results showed that bimetallic PtCo enhances ethanol oxidation by increasing the amount of CO2 produced; however, at elevated temperatures, the bimetallic PtCo catalyst lacked stability. Nevertheless, the ALD-prepared PtCoPt catalyst showed similar reaction mechanism as PtCo catalyst, but possess increased stability and superior performance for ethanol oxidation at elevated temperatures. |
Patrocinador/es: | The authors acknowledge Aalto University and Academy of Finland for funding. |
URI: | http://hdl.handle.net/10045/37259 |
ISSN: | 0021-9517 (Print) | 1090-2694 (Online) |
DOI: | 10.1016/j.jcat.2013.08.027 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1016/j.jcat.2013.08.027 |
Aparece en las colecciones: | INV - EQSUP - Artículos de Revistas |
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Archivo | Descripción | Tamaño | Formato | |
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2014_Santasalo-Aarnio_etal_JCAT_final.pdf | Versión final (acceso restringido) | 2,34 MB | Adobe PDF | Abrir Solicitar una copia |
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