Effect of ZrO₂ on steam reforming of methanol over CuO/ZnO/ZrO₂/Al₂O₃ catalysts

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• 作者：Cheng-Chun Chang^a ; Jhih-Wei Wang^a ; Ching-Tu Chang^b ; Biing-Jye Liaw^c ; ^{bjliaw@tiit.edu.tw} ; Yin-Zu Chen^a ; ^{ynzuchen@cc.ncu.edu.tw}
• 关键词：Steam reforming ; Methanol ; Hydrogen ; ZrO2 ; CuO/ZnO ratio
• 刊名：Chemical Engineering Journal
• 出版年：2012
• 期刊代码：16_13858947
• 类别：ce
• 出版时间：1 June, 2012
• 卷：192
• 期：Complete
• 页码：350-356
• 文件大小：564 K

摘要

The CuO/ZnO/ZrO₂/Al₂O₃ catalysts were prepared by co-precipitation method and the effects of ZrO₂ on steam reforming of methanol over CuO/ZnO/Al₂O₃ catalysts with various CuO/ZnO ratios (40/50-10/80) were examined and discussed. Zirconium oxide improved the dispersion and reducibility of the CuO/ZnO/Al₂O₃ catalysts and promoted the adsorption of methanol. The promoting effect of ZrO₂ was observed only on the CuO/ZnO/Al₂O₃ with the CuO/ZnO ratio less than 0.8. A lower CuO/ZnO ratio in the CuO/ZnO/Al₂O₃ catalysts was associated with greater promoting effect of ZrO₂ in the SRM reactions, which depend on appropriate interactions through the interface between CuO and ZnO.