Influence of Interaction Components on the NOx Adsorption Properties of Cu-Ba-Ce Composite Catalysts

被引：2
作者：
Cai, Hao [1 ]
Zhang, Xiangzhao [1 ]
Wang, Pan [2 ]
Li, Kai [2 ]
Shao, Haicheng [1 ]
Liu, Guiwu [1 ]
Qiao, Guanjun [1 ,3 ]
机构：
[1] Jiangsu Univ, Sch Mat Sci & Engn, Zhenjiang 212013, Peoples R China
[2] Jiangsu Univ, Sch Automot & Traff Engn, Zhenjiang 212013, Peoples R China
[3] Xi An Jiao Tong Univ, State Key Lab Mech Behav Mat, Xian 710049, Shaanxi, Peoples R China
来源：
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY | 2019年 / 19卷 / 07期
基金：
中国国家自然科学基金;
关键词：
NO Oxidation; NOx Adsorption; Composite Catalysts; Barium Carbonate; STORAGE; REDUCTION; PERFORMANCE; CARBONATES; FE; CO;
D O I：
10.1166/jnn.2019.16318
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
For further investigating the role of components in copper-cerium-barium composite oxide catalysts, a series of noble metal-free catalysts with different barium contents were synthesized by citric acid method. The prepared catalysts were characterized by X-ray diffraction, Brunauer-Emmett-Teller method, scanning electron microscopy, Raman spectroscopy, and Fourier transform infrared spectroscopy. Catalysts were evaluated by NO oxidation, NOx adsorption, and NOx temperature-programmed desorption. The results showed that barium content significantly affected the catalysts' properties. With barium addition, interactions among components considerably changed; hence, the microstructure and performance of catalysts were distinctly different. In general, the interactions of barium-copper and barium-cerium were not conducive to catalyst adsorption. Adsorption performance derived from barium carbonate was superior to those of the other two components.
引用
收藏
页码：4039 / 4045
页数：7
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