dopingeffectofcationszr4al3andsi4onmnoxceo2nanorodcatalystfornh3scrreactionatlowtemperature

	dopingeffectofcationszr4al3andsi4onmnoxceo2nanorodcatalystfornh3scrreactionatlowtemperature
	Yao Xiaojiang2 ; Cao Jun 2; Chen Li 2; Kang Keke 2; Chen Yang2 ; Tian Mi 2; Yang Fumo1
刊名	催化学报
	2019
卷号	40 期号:5 页码:733
ISSN号	0253-9837
英文摘要	Thermally stable Zr~(4+), Al~(3+), and Si~(4+) cations were incorporated into the lattice of CeO_2 nano‐rods (i.e., CeO_2‐NR) in order to improve the specific surface area. The undoped and Zr~(4+), Al~(3+), and Si~(4+) doped nano‐rods were used as supports to prepare MnO_x/CeO_2‐NR, MnO_x/CZ‐NR, MnO_x/CA‐NR, and MnO_x/CS‐NR catalysts, respectively. The prepared supports and catalysts were comprehensively characterized by transmission electron microscopy (TEM), high‐resolution TEM, X‐ray diffraction, Raman and N2‐physisorption analyses, hydrogen temperature‐programmed reduction, ammonia temperature‐programmed desorption, in situ diffuse reflectance infrared Fourier‐transform spectroscopic analysis of the NH3 adsorption, and X‐ray photoelectron spectroscopy. Moreover, the catalytic performance and H_2O+SO_2 tolerance of these samples were evaluated through NH3‐selective catalytic reduction (NH3‐SCR) in the absence or presence of H_2O and SO_2. The obtained results show that the MnO_x/CS‐NR catalyst exhibits the highest NOx conversion and the lowest N2O concentration, which result from the largest number of oxygen vacancies and acid sites, the highest Mn~(4+) content, and the lowest redox ability. The MnO_x/CS‐NR catalyst also presents excellent resistance to H_2O and SO_2. All of these phenomena suggest that Si~(4+) is the optimal dopant for the MnO_x/CeO_2‐NR catalyst.
语种	英语
内容类型	期刊论文
源URL	[http://119.78.100.138/handle/2HOD01W0/9119]
专题	中国科学院重庆绿色智能技术研究院
作者单位	1.四川大学 2.中国科学院重庆绿色智能技术研究院
推荐引用方式 GB/T 7714	Yao Xiaojiang,Cao Jun,Chen Li,et al. dopingeffectofcationszr4al3andsi4onmnoxceo2nanorodcatalystfornh3scrreactionatlowtemperature[J]. 催化学报,2019,40(5):733.
APA	Yao Xiaojiang.,Cao Jun.,Chen Li.,Kang Keke.,Chen Yang.,...&Yang Fumo.(2019).dopingeffectofcationszr4al3andsi4onmnoxceo2nanorodcatalystfornh3scrreactionatlowtemperature.催化学报,40(5),733.
MLA	Yao Xiaojiang,et al."dopingeffectofcationszr4al3andsi4onmnoxceo2nanorodcatalystfornh3scrreactionatlowtemperature".催化学报 40.5(2019):733.