Bimetallic catalysts performance during ethanol steam reforming: Influence of support materials

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• 作者：André ; ia Cristina Furtado ; Christian Gonç ; alves Alonso ; Mauricio Pereira Cantã ; o ; Ná ; dia Regina Camargo Fern ; es-Machado
• 关键词：Hydrogen ; Ethanol ; Steam reforming ; Ni– ; Cu/supported catalyst
• 刊名：International Journal of Hydrogen Energy
• 出版年：2009
• 出版时间：September 2009
• 年：2009
• 卷：34
• 期：17
• 页码：7189-7196
• 全文大小：551 K

文摘

Ni–Cu catalysts supported on different materials were tested in ethanol steam reforming reaction for hydrogen production. These catalysts were evaluated at reaction temperature of 400 °C under atmospheric pressure. The reagents, with a water/ethanol molar ratio equal to 10, were fed at 70 dm³/(h g_cat) (after vaporization). Analysis of the ethanol conversion, as well as evaluation and quantification of the reaction products, indicated the catalyst 10 % Ni–1 % Cu/Ce_0.6Zr_0.4O₂ as the most appropriate for the ethanol steam reforming under investigated reaction conditions, among the studied catalysts. During 8 h of reaction this catalyst presented an average ethanol conversion of 43 % , producing a high amount of H₂ by steam reforming and by ethanol decomposition and dehydrogenation parallel reactions. Steam reforming, among the observed reactions, was quantified by the presence of carbon dioxide. About 60 % of the hydrogen was produced from ethanol steam reforming and 40 % from parallel reactions.