Destructive Influence of Cement Dust on the Structure and DeNO(x) Performance of V-Based SCR Catalyst

doi:10.1021/acs.iecr.9b04268

	Destructive Influence of Cement Dust on the Structure and DeNO(x) Performance of V-Based SCR Catalyst
	Wang, Chao; Li, Changming; Li, Yunjia; Lin Huangfu; Liu, Zhouen; Gao, Shiqiu; Yu, Jian
刊名	INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
	2019-10-30
卷号	58 期号:43 页码:19847-19854
ISSN号	0888-5885
DOI	10.1021/acs.iecr.9b04268
英文摘要	To investigate the poisoning effects of the cement dust, the commercial V-based catalyst was directly mixed and aged with the real cement kiln dust. It was found that the introduction of cement dust led to the serious deactivation of catalysts, especially for the aged samples above 300 degrees C. The multiple characterization results (X-ray diffraction, Raman spectroscopy, X-ray photoelectron spectroscopy, NH3-temperature-programmed desorption, and H-2-temperature-programmed reduction) revealed that the alkaline/alkaline earth metal elements (mainly Ca) can react with the active components through solid phase reaction to form inactive surface A(x)V(1-x)O(4) (A=Ca, K, Na, etc.), solid solutions, and the Scheelite phase, bringing about the reduction of the surface acid sites and the passivation of the redox cycle of V5+/V4+. These results implied that the inert solid solutions may form on the industrial flue gas condition, and change the structure and properties of catalytic sites, which may result in the poisoning and inactivation of the selective catalytic reduction catalyst by cement dust.
资助项目	International Science and Technology Cooperation Program of China[2016YFE0128300] ; National Natural Science Foundation of China[21601192] ; National Natural Science Foundation of China[21878310] ; State Key Laboratory of Multiphase Complex Systems[MPCS-2019-0-03]
WOS关键词	V2O5-WO3/TIO2 CATALYSTS ; ACTIVE-SITES ; FLUE-GAS ; REDUCTION ; NO ; NH3 ; VANADIA ; DEACTIVATION ; NH3-SCR ; OXIDES
WOS研究方向	Engineering
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000493867400014
资助机构	International Science and Technology Cooperation Program of China ; National Natural Science Foundation of China ; State Key Laboratory of Multiphase Complex Systems
内容类型	期刊论文
源URL	[http://ir.ipe.ac.cn/handle/122111/39023]
专题	中国科学院过程工程研究所
通讯作者	Yu, Jian
作者单位	Chinese Acad Sci, Inst Proc Engn, State Key Lab Multiphase Complex Syst, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Wang, Chao,Li, Changming,Li, Yunjia,et al. Destructive Influence of Cement Dust on the Structure and DeNO(x) Performance of V-Based SCR Catalyst[J]. INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,2019,58(43):19847-19854.
APA	Wang, Chao.,Li, Changming.,Li, Yunjia.,Lin Huangfu.,Liu, Zhouen.,...&Yu, Jian.(2019).Destructive Influence of Cement Dust on the Structure and DeNO(x) Performance of V-Based SCR Catalyst.INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH,58(43),19847-19854.
MLA	Wang, Chao,et al."Destructive Influence of Cement Dust on the Structure and DeNO(x) Performance of V-Based SCR Catalyst".INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH 58.43(2019):19847-19854.