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Effects of preparation conditions of Au/FeO_x /Al_2O_3 catalysts prepared by a modified two-step method on the stability for CO oxidation |
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| Authors: | Xuhua Zou Jinguang Xu Shixue Qi Zhanghuai Suo Lidun An Feng Li |
| Affiliation: | Xuhua Zou 1,Jinguang Xu 1,Shixue Qi 1,Zhanghuai Suo 1,Lidun An 1,Feng Li 2 1. Institute of Applied Catalysis,Yantai University,Yantai 264005,Shandong,China,2. State Key Laboratory of Chemical Engineering Resource,Beijing University of Chemical Technology,Beijing 100029 |
| Abstract: | Composite oxide FeO x /Al 2 O 3 -supported gold catalysts were prepared by a modified two-step method. The effects of preparation conditions on the initial catalytic activity and long-time stability were studied for CO oxidation. XRD, XPS and in situ FTIR were employed to investigate the state of FeO x and the species on the catalyst surface. The results showed that Au/FeO x /Al 2 O 3 catalysts prepared by this method exhibited high activity and high stability in a wide pH value range. Calcination pretreatm... |
| Keywords: | supported gold catalyst CO oxidation composite oxide support pH value stability |
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