Au/CuO-CeO2 catalyst for preferential oxidation of CO in hydrogen-rich stream: Effect of CuO content

NCU Institutional Repository > 工學院 > 化學工程與材料工程學系 > 期刊論文 > Item 987654321/101864

請使用永久網址來引用或連結此文件: https://ir.lib.ncu.edu.tw/handle/987654321/101864

題名:	Au/CuO-CeO2 catalyst for preferential oxidation of CO in hydrogen-rich stream: Effect of CuO content
作者:	陳郁文;Lee, Der-Shing;Chen, Yu-Wen
貢獻者:	工學院化學工程與材料工程學系
關鍵詞:	CeO2;CO oxidation;CuO;Fuel cell;Gold;PROX
日期:	2016-02-09
上傳時間:	2026-04-21 14:48:43 (UTC+8)
出版者:	Elsevier Ltd.;Elsevier Ltd
摘要:	摘要： A series of Au/CuO–CeO2 with various amounts of CuO was prepared. CuO–CeO2 was prepared by co-precipitation and Au was loaded by deposition–precipitation. The aim of this study was to develop a catalyst which is highly active and selective in preferential oxidation of CO in hydrogen stream (PROX). These catalysts were characterized by N2-sorption, XRD, TEM, HR-TEM, and XPS. The PROX reaction was carried out in a fixed bed continuous flow reactor with a feed of CO: O2: H2: He = 1.33: 1.33: 65.33: 32.01 in volume ratios. The incorporation of copper ion into ceria lattice increased the oxygen storage capacity of ceria and enhanced the activity of the catalyst. The excess CuO would present on the surface of CeO2. Au particles were well dispersed well on the support and the particle size of gold was in the range of 2 and 4 nm. Au was the active species and CuO played the promoter role. Those CuO presented on the surface of CeO had negative effect for CO oxidation. The selectivity of oxygen reacting with CO increased with increasing CuO content. Adding suitable amount of CuO in Au/CeO2 is beneficial for CO conversion and suppressing hydrogen oxidation in fuel cell operation condition. •Au/CuO–CeO2 is a good catalyst for CO removal in H2 stream.•Incorporation of Cu ions into CeO2 lattice increases the oxygen storage capacity. 出版者： Elsevier Ltd 出版日期： 2016-02-09 出處： International journal of hydrogen energy, 2016-02, Vol.41 (5), p.3605-3612 資源來源： Elsevier ScienceDirect Journals Complete 版權： 2015 Hydrogen Energy Publications, LLC. 識別號： ISSN: 0360-3199 識別號： EISSN: 1879-3487 識別號： DOI: 10.1016/j.ijhydene.2015.12.137
顯示於類別:	[化學工程與材料工程學系 ] 期刊論文

文件中的檔案:

檔案	描述	大小	格式	瀏覽次數
index.html		0Kb	HTML	27	檢視/開啟

在NCUIR中所有的資料項目都受到原著作權保護.

社群 sharing

資料載入中.....