Studies on the surface properties of CuO supported on CeO2 and γ-Al2O3 and its reaction properties for NO+CO reaction(CuO在CeO2和γ-Al2O3上的表面性质及对NO+CO反应性能的研究)

在色谱-微反实验装置上考察了CuO/CeO2、CuO/γ-Al2O3及CeO2改性的催化剂对NO+CO的反应性能,并用TPR、XRD、XPS、BET和NO-TPD等技术对上述催化剂进行了表征.结果表明催化剂活性的提高与铜物种在两种载体(CeO2和γ-Al2O3)上的价态(Cu2+和Cu+)、分散状态和吸附特性有关.TPR实验显示CuO在CeO2上存在两种还原物种,而在γ-Al2O3上只有一种还原物种.XPS检测表明CuO/CeO2的Cu2p3/2结合能值与Cu2+和Cu+的标准结合能基本吻合,而CuO/γ-Al2O3的Cu2p3/2结合能值接近或略低于Cu2+的标准结合能. NO-TPD实验表...

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Bibliographic Details

Main Authors:	JIANGXiao-yuan(蒋晓原), DINGGuang-hui(丁光辉), LIUQi(刘琪), LOULi-ping(楼莉萍), CHENYing-xu(陈英旭), ZHENGXiao-ming(郑小明)
Format:	Artigo
Language:	Chinês
Published:	Zhejiang University Press 2003-05-01
Series:	Zhejiang Daxue xuebao. Lixue ban
Subjects:	ceo2 γ-al2o3 cuo/ceo2 cuo/γ-al2o3 no+co反应性能
Online Access:	https://doi.org/zjup/1008-9497.2003.30.3.289-295
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