CuO/CeO₂ supported on Zr doped SBA-15 as catalysts for preferential CO oxidation (CO-PROX)

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• 作者：&#xc1 ; lvaro Reyes-Carmona^a ; Ana Arango-Dí ; az^a ; Elisa Moretti^b ; Aldo Talon^b ; Loretta Storaro^b ; Maurizio Lenarda^b ; Antonio Jimé ; nez-Ló ; pez^a ; Enrique Rodrí ; guez-Castelló ; n^a ; ^{castellon@uma.es}
• 关键词：Hydrogen purification ; Fuel cell ; CO-PROX ; CuO/CeO₂
• 刊名：Journal of Power Sources
• 出版年：2011
• 出版时间：1 May 2011
• 年：2011
• 卷：196
• 期：9
• 页码：4382-4387
• 全文大小：605 K

文摘

The application of the catalytic system CuO/CeO₂ supported on Zr doped SBA-15 mesoporous silica to the preferential oxidation of CO on hydrogen streams (CO-PROX) suitable to be used to feed PEM fuel cells, has been studied. A loading of 20 % (wt.) Ce and 6 % (wt.) Cu was found optimal for the CO-PROX reaction. The influence of the presence of CO₂ and H₂O in the gas feed was also studied in order to simulate the real operation conditions of a PEMFC feed stream generated by alcohol steam reforming. The catalysts were characterized by XRD, adsorption–desorption of N₂ at −196 °C, TEM, –H₂-TPR and XPS. The system reducibility was found modified by the incorporation of zirconium in the support, with improvement of both the conversion and selectivity of the catalytic system, compared to the same material without Zr.