A novel catalyst fabricated from Al–Cu–Fe quasicrystal for steam reforming of methanol

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• 作者：Toyokazu Tanabe ; Satoshi Kameoka and An Pang Tsai
• 关键词：Quasicrystal ; Al– ; Cu– ; Fe alloy ; Wet milling process ; Leaching ; Na₂CO₃ ; Methanol steam reforming
• 刊名：Catalysis Today
• 出版年：2006
• 期刊代码：13_09205861
• 类别：ce
• 出版时间：15 February 2006
• 卷：111
• 期：3-4
• 页码：153-157
• 文件大小：346 K

摘要

The optimum preparation condition of Al–Cu–Fe quasicrystalline (QC) catalyst with excellent catalytic performance for steam reforming of methanol (SRM) has been investigated. The QC alloy is superior to the other crystalline Al–Cu–(Fe) alloys (i.e., beta and theta phase) as a catalyst material because of the brittle nature of QC. The wet milling process (in ethanol) for the QC powders is much better than the dry milling process to obtain fine particles with high surface area. The QC powder prepared by the wet process followed by leaching in Na₂CO₃ aq. at 323 K exhibited the highest catalytic performance (activity and stability) in the present study. From these findings, it is clear that the QC catalyst with the excellent catalytic performance could be obtained by controlling the initial grain size of the QC powder and the leaching temperature.