Effects of metal cation doping in CeO(2) support on catalytic methane steam reforming at low temperature in an electric field

Catalytic methane steam reforming was conducted at low temperature using a Pd catalyst supported on Ce(1−x)M(x)O(2) (x = 0 or 0.1, M = Ca, Ba, La, Y or Al) oxides with or without an electric field (EF). The effects of the catalyst support on catalytic activity and surface proton hopping were investi...

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Detalles Bibliográficos
Autores principales: Takahashi, Ayako, Inagaki, Reona, Torimoto, Maki, Hisai, Yudai, Matsuda, Taku, Ma, Quanbao, Seo, Jeong Gil, Higo, Takuma, Tsuneki, Hideaki, Ogo, Shuhei, Norby, Truls, Sekine, Yasushi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2020
Materias:
Chemistry
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9052117/
https://www.ncbi.nlm.nih.gov/pubmed/35497172
http://dx.doi.org/10.1039/d0ra01721c
Descripción
Sumario:Catalytic methane steam reforming was conducted at low temperature using a Pd catalyst supported on Ce(1−x)M(x)O(2) (x = 0 or 0.1, M = Ca, Ba, La, Y or Al) oxides with or without an electric field (EF). The effects of the catalyst support on catalytic activity and surface proton hopping were investigated. Results show that Pd/Al-CeO(2) (Pd/Ce(0.9)Al(0.1)O(2)) showed higher activity than Pd/CeO(2) with EF, although their activity was identical without EF. Thermogravimetry revealed a larger amount of H(2)O adsorbed onto Pd/Al-CeO(2) than onto Pd/CeO(2), so Al doping to CeO(2) contributes to greater H(2)O adsorption. Furthermore, electrochemical conduction measurements of Pd/Al-CeO(2) revealed a larger contribution of surface proton hopping than that for Pd/CeO(2). This promotes the surface proton conductivity and catalytic activity during EF application.

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