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	Regeneration of commercial selective catalyst reduction catalysts deactivated by pb and other inorganic elements
	Yu, Yanke1,2; Wang, Jinxiu1,2; Chen, Jinsheng1,2; He, Xinjiang3; Wang, Yujing3; Song, Kai3; Xie, Zongli4
刊名	Journal of environmental sciences
	2016-09-01
卷号	47页码:100-108
关键词	Regeneration Scr catalysts Bronsted acid sites Reducibility Pb
ISSN号	1001-0742
DOI	10.1016/j.jes.2015.12.039
通讯作者	Chen, jinsheng(jschen@iue.ac.cn)
英文摘要	The regeneration of commercial scr (selective catalyst reduction) catalysts deactivated by pb and other elements was studied. the deactivated catalyst samples were prepared by chemical impregnation with mixed solution containing k2so4, na2so4, caso4, pb(no3)(2) and nh4h2po4. a novel method combining ethylenediaminetetraacetic acid disodium salt (edta-2na) and h2so4 solution (viz. catalysts treated by dilute edta-2na and h2so4 solution in sequence) was used to recover the activity of deactivated samples, and the effect was compared with single h2so4, oxalic acid, acetic acid, edta or hno3 solutions. the surface structure, acidity and reducibility of samples were characterized by n-2 adsorption desorption, inductively coupled plasma optical emission spectrometer (icp-oes), scanning electron microscopy (sem), x-ray diffraction (xrd), x-ray fluorescence (xrf), h-2-temperature programmed section (h-2-tpr), nh3-temperature programmed desorption (nh3-tpd) and in situ drifts. impurities caused a decrease of specific surface area and surface reducibility, as well as bronsted acid sites, and therefore led to severe deactivation of the scr catalyst. the use of an acid solution alone possibly eliminated the impurities on the deactivated catalyst to some extent, and also increased the specific surface area and bronsted acid sites and promoted the surface reducibility, thus recovered the activity partially. the combination of edta-2na and h2so4 could remove most of the impurities and improve the activity significantly. the removal of pb should be an important factor for regeneration. due to a high removal rate for pb and other impurities, the combination of edta-2na and h2so4 solutions provided the best efficiency. (c) 2016 the research center for eco-environmental sciences, chinese academy of sciences. published by elsevier b.v.
WOS关键词	SCR CATALYSTS ; 3-WAY CATALYSTS ; ALKALI-METALS ; NITRIC-OXIDE ; NH3 ; NO ; REACTIVATION ; ADDITIVES ; MECHANISM ; AMMONIA
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Environmental Sciences
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000383932200012
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2376009
专题	中国科学院大学
通讯作者	Chen, Jinsheng
作者单位	1.Chinese Acad Sci, Inst Urban Environm, Ctr Excellence Urban Atmospher Environm, Xiamen 361021, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Huadian Zouxian Power Co Ltd, Jinan 273522, Shandong, Peoples R China 4.CSIRO Mat Sci & Engn, Private Bag 33, Clayton, Vic 3168, Australia
推荐引用方式 GB/T 7714	Yu, Yanke,Wang, Jinxiu,Chen, Jinsheng,et al. Regeneration of commercial selective catalyst reduction catalysts deactivated by pb and other inorganic elements[J]. Journal of environmental sciences,2016,47:100-108.
APA	Yu, Yanke.,Wang, Jinxiu.,Chen, Jinsheng.,He, Xinjiang.,Wang, Yujing.,...&Xie, Zongli.(2016).Regeneration of commercial selective catalyst reduction catalysts deactivated by pb and other inorganic elements.Journal of environmental sciences,47,100-108.
MLA	Yu, Yanke,et al."Regeneration of commercial selective catalyst reduction catalysts deactivated by pb and other inorganic elements".Journal of environmental sciences 47(2016):100-108.

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