Comparative studies of low-temperature water–gas shift reaction over Pt/CeO₂, Au/CeO₂, and Au/Fe₂O₃ catalysts

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• 作者：Luengnaruemitchai ; Apanee ; Osuwan ; Somchai ; Gulari ; Erdogan
• 关键词：Water&ndash ; gas shift reaction ; Platinum ; Gold ; Ceria ; Ferric oxide
• 刊名：Catalysis Communications
• 出版年：2003
• 期刊代码：12_15667367
• 类别：ce
• 出版时间：May, 2003
• 卷：4
• 期：5
• 页码：215-221
• 文件大小：333 K

摘要

We studied catalytic low-temperature water–gas shift (WGS) reaction over the Pt/CeO₂, Au/CeO₂ and Au/Fe₂O₃ catalysts. The activity of these catalysts was tested in the composition of 4%CO, 2.6–20%H₂O and helium in the range of 120–360 °C. It was found that CO and H₂O concentrations have significant effects on the catalytic activity. The 1%Pt/CeO₂ was substantially more active than other catalysts in the presence of 20%H₂O. The catalytic activity of these catalysts was compared in the presence of H₂ and deactivation test was also performed. BET, XRD, SEM and TEM analyses give additional information on the morphological structure of investigated samples.