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标题：NO x storage and reduction on Pt-supported BaTiO3 with alkali washing
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作者：Zengyan Han ; Dechao Zheng ; Ying Xin 等
期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：310
期号：4
页码：1-6
DOI：10.1088/1755-1315/310/4/042019
出版社：IOP Publishing
摘要：In this paper, we prepared Pt/BaTiO3-x catalyst through modified the surface of BaTiO3 perovskite by NaOH aqueous solution and loaded Pt by incipient wetness impregnation method. A series of characterization techniques including XRD, BET and in situ IR was conducted to investigate the physical and chemical properties. We found that NO x storage capacity of the catalyst was significantly improved as the sample was washed in alkali for 2 h, meanwhile NO x conversion was optimal. The surface of the catalyst was modified by alkali washing process, and then Pt was loaded. Further calcination could enhance the interaction between Pt and Ba, which facilitate the formation of a reactive nitrite species during the adsorption process, thus increasing NO x storage reduction (NSR) activity.