One pot synthesized CeO2-WO3-TiO2 catalysts with enriched TiO2 (0 0 1) facets for selective catalytic reduction of NO with NH3 by evaporation-induced self-assembly method

doi:10.1016/j.cej.2018.07.199

CORC > 兰州理工大学 > 兰州理工大学 > 石油化工学院

	One pot synthesized CeO2-WO3-TiO2 catalysts with enriched TiO2 (0 0 1) facets for selective catalytic reduction of NO with NH3 by evaporation-induced self-assembly method
	Zong, Luyao 1,2; Zhang, Guodong 1; Zhao, Haijun 1; Zhang, Jiyi 2; Tang, Zhicheng 1
刊名	Chemical Engineering Journal
	2018-12-15
卷号	354 页码:295-303
关键词	Ammonia Cerium oxide Evaporation Oxide minerals Reduction Selective catalytic reduction Self assembly Sulfur compounds Titanium dioxide Tungsten compounds Acid site Competitive adsorption Evaporation induced self assemblies Linear relationships Selective catalytic reduction of NO Surface atomic ratio TiO2 (0 0 1) facets TiO2 catalyst
ISSN号	13858947
DOI	10.1016/j.cej.2018.07.199
英文摘要	CeO2-WO3-TiO2 catalysts were directly synthesized by evaporation-induced self-assembly (EISA) method and used for selective catalytic reduction of NO with NH3. The percentage of enriched TiO2 (0 0 1) facets on CeO2-WO3-TiO2 catalysts were modified by the P123:Ti ratio. While the P123:Ti ratio was 0.02, the percentage of enriched TiO2 (0 0 1) facets were the maximum on CeO2-WO3-TiO2 catalysts. At this condition, the catalytic activity and the percentage of TiO2 (0 0 1) facets presented linear relationship. With the increase of the percentage of TiO2 (0 0 1) facets, catalytic activity of catalysts presented a rising trend. Thus CeO2-WO3-TiO2-0.02 catalyst showed the best catalytic activity for selective catalytic reduction of NO with NH3. Besides, the modulation of P123:Ti ratio could also influence the reducing capacity and acid sites for catalysts, which would promote catalytic activity of catalysts. Based on those influence factors, CeO2-WO3-TiO2-0.02 catalyst showed the best catalytic activity. Simultaneously, CeO2-WO3-TiO2-0.02 catalyst showed excellent resistance of H2O and SO2. Various characterization results indicated that the surface atomic ratio of Oβ/(Oα + Oβ) had a certain decrease for poisoned catalyst, which would result in the decrease of low-coordinated atoms on TiO2 (0 0 1) facets. At the same time, when pumped of H2O and SO2, the ammonium sulfate salt deposition and competitive adsorption of SO2 and NO would occur so that result in the decrease of catalytic activity. © 2018 Elsevier B.V.
资助项目	Key Science and Technology Program of Lanzhou City[2017-4-111]
WOS研究方向	Engineering
语种	英语
出版者	Elsevier B.V., Netherlands
WOS记录号	WOS:000445413900030
状态	已发表
内容类型	期刊论文
源URL	[http://ir.lut.edu.cn/handle/2XXMBERH/114737]
专题	石油化工学院
通讯作者	Tang, Zhicheng
作者单位	1.Chinese Acad Sci, Lanzhou Inst Chem Phys, State Key Lab Oxo Synth & Select Oxidat, Natl Engn Res Ctr Fine Petrochem Intermediates, Lanzhou 730000, Gansu, Peoples R China 2.Lanzhou Univ Technol, Sch Petr & Chem, Lanzhou 730050, Gansu, Peoples R China
推荐引用方式 GB/T 7714	Zong, Luyao,Zhang, Guodong,Zhao, Haijun,et al. One pot synthesized CeO2-WO3-TiO2 catalysts with enriched TiO2 (0 0 1) facets for selective catalytic reduction of NO with NH3 by evaporation-induced self-assembly method[J]. Chemical Engineering Journal,2018,354:295-303.
APA	Zong, Luyao,Zhang, Guodong,Zhao, Haijun,Zhang, Jiyi,&Tang, Zhicheng.(2018).One pot synthesized CeO2-WO3-TiO2 catalysts with enriched TiO2 (0 0 1) facets for selective catalytic reduction of NO with NH3 by evaporation-induced self-assembly method.Chemical Engineering Journal,354,295-303.
MLA	Zong, Luyao,et al."One pot synthesized CeO2-WO3-TiO2 catalysts with enriched TiO2 (0 0 1) facets for selective catalytic reduction of NO with NH3 by evaporation-induced self-assembly method".Chemical Engineering Journal 354(2018):295-303.