NO x storage and reduction on Pt-supported BaTiO3 with alkali washing

2019 2nd International Conference of Green Buildings and Environmental Management

生态环境科学

Han, Zengyan^1 ; Zheng, Dechao^1 ; Xin, Ying^1 ; Li, Qian^1 ; Zhang, Nana^1 ; Zhang, Zhaoliang^1

School of Chemistry and Chemical Engineering, Shandong Provincial Key Laboratory of Fluorine Chemistry and Chemical Materials, University of Jinan, Shandong Province

250022, China^1

关键词: Adsorption process;    Characterization techniques;    Incipient wetness impregnation method;    NOx conversion;    NOx storage and reduction;    NOx storage reduction;    Physical and chemical properties;    Washing process;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/310/4/042019/pdf
DOI  :  10.1088/1755-1315/310/4/042019

学科分类：环境科学（综合）

来源: IOP

【 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 NOx storage capacity of the catalyst was significantly improved as the sample was washed in alkali for 2 h, meanwhile NOx 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 NOx storage reduction (NSR) activity.