Au/Cu-Fe-La-Al2O3: A highly active, selective and stable catalysts for preferential oxidation of carbon monooxide
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- 作者：Xun Sun ; Huijuan Su ; Qingquan Lin ; Chung Han ; Yuhua Zheng ; Libo Sun ; Caixia Qi ; qicx@ytu.edu.cn" class="auth_mail" title="E-mail the corresponding author
- 关键词：Gold catalysts ; Copper oxide ; CO-PROX ; CO oxidation ; Stability
- 刊名：Applied Catalysis A: General
- 出版年：2016
- 出版时间：25 October 2016
- 年：2016
- 卷：527
- 期：Complete
- 页码：19-29
- 全文大小：3755 K
文摘
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Copper precursor was added to a FLA support via wetness impregnation method before Au deposition.
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High dispersion of Au nanparticles, formation of Au-Cu alloy, and the close contact of single or alloyed Au nanoparticles to CuO species which makes Au partially positively charged.
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Copper addition improved overall performance for PROX but lowered activity in O2-rich stream.
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More Au-CuO interfaces or positively charged gold play a crucial role in promoting CO2 formation in CO-PROX reaction.