标题:Change of Cu+species and synergistic effect of copper and cerium during reduction-oxidation treatment for preferential CO oxidation
作者:Zhang, Hao ;Zhao, Xiaozhou ;Wang, Shuang ;Zeng, Shanghong ;Su, Haiquan
作者机构:[Zhang, Hao ;Zhao, Xiaozhou ;Wang, Shuang ;Zeng, Shanghong ;Su, Haiquan ] Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materia 更多
通讯作者:Zeng, Shanghong
来源:Applied Surface Science
出版年:2018
卷:441
页码:754-763
DOI:10.1016/j.apsusc.2018.01.244
摘要:The CuO-CeO2@SiO2catalyst with flower-sphere morphology was prepared by the impregnation method and then experienced the reduction-oxidation treatment at different temperatures. The multi-technique characterization shows that the reduction-oxidation treatment can remodel CuO, improve textural and surface properties and change Cu+content and synergistic effect of copper and cerium. The importance of this work lies in the fact that the decrease of Cu+content and synergistic effect of copper and cerium that occurs in the reduction-oxidation process results in the decrease of catalytic activity over the CuO-CeO2@SiO2catalyst for preferential CO oxidation. The process of reaction in rich-hydrogen streams is equivalent to a reduction procedure which decreases Cu+content and synergistic effect of copper and cerium.
© 2018 Elsevier B.V.
收录类别:EI
资源类型:期刊论文
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