标题:Large-scale synthesis and catalytic activity of nanoporous Cu-O system towards CO oxidation
作者:Kou, Tianyi;Si, Conghui;Gao, Yulai;Frenzel, Jan;Wang, Hao;Yan, Xuejiao;Bai, Qingguo;Eggeler, Gunther;Zhang, Zhonghua
作者机构:[Kou, T] Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, School of Materials Science and Engineering, Shandong Unive 更多
通讯作者:Zhang, Zhonghua
通讯作者地址:[Zhang, ZH]Shandong Univ, Sch Mat Sci & Engn, Minist Educ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Jingshi Rd 17923, Jinan 250061, Peoples R Ch 更多
来源:RSC Advances
出版年:2014
卷:4
期:110
页码:65004-65011
DOI:10.1039/c4ra12227e
摘要:Nanoporous Cu-O system catalysts with different oxidation states of Cu have been fabricated through a combination of dealloying as-milled Al66.7Cu33.3 alloy powders and subsequent thermal annealing. X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TEM) and X-ray photoelectron spectroscopy (XPS) have been used to characterize the microstructure and surface chemical states of Cu-O catalysts. The peculiar nanoporous structure can be retained in Cu-O catalysts after thermal treatment. Catalytic experiments reveal that all the Cu-O samples exhibit complete CO conversion below 170 degrees C. The optimal catalytic performance could be achieved through the combination of annealing in air with hydrogen treatment for the Cu-O catalyst, which shows a near complete conversion temperature (T-90%) of 132 degrees C and an activation energy of 91.3 KJ mol(-1). In addition, the present strategy (ball milling, dealloying and subsequent thermal treatment) could be scaled up to fabricate high-performance Cu-O catalysts towards CO oxidation.
收录类别:EI;SCOPUS;SCIE
WOS核心被引频次:10
Scopus被引频次:10
资源类型:期刊论文
原文链接:https://www.scopus.com/inward/record.uri?eid=2-s2.0-84924080230&doi=10.1039%2fc4ra12227e&partnerID=40&md5=19221b4dd152d1c8e488e45ada72ed26
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