Highly active Ni/MgO in oxidative steam pre-reforming of n-butane for fuel cell application

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• 作者：Katsutoshi Nagaoka ; Katsutoshi Sato ; Hiroyasu Nishiguchi ; Yusaku Takita
• 关键词：Pre-reforming ; n-Butane ; H₂ production ; Fuel cell ; Ni/MgO
• 刊名：Catalysis Communications
• 出版年：2007
• 期刊代码：12_15667367
• 类别：ce
• 出版时间：November 2007
• 卷：8
• 期：11
• 页码：1807-1810
• 文件大小：201 K

摘要

Oxidative steam reforming of n-butane over supported Ni catalysts at relatively low temperature, 723 K, is reported. Among all the supported 20 wt%Ni catalysts studied, only Ni/MgO was able to convert n-butane directly after O₂ oxidation. Additionally, when the Ni/MgO was prepared from an aqueous Ni(NO₃)₂ solution with pH 7, H₂ formation rate of Ni/MgO (pH 7) at a high SV (1660 l(h · g)⁻¹) was 2.3 times as high as that of conventional Ni/MgO. The higher activity of Ni/MgO (pH 7) was ascribed to stronger resistance against oxidation of Ni⁰ due to the formation of relatively large Ni⁰ particles.