Effects of alkali and alkaline earth metals on Cu-SSZ-39 catalyst for the selective catalytic reduction of NOx with NH3

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 大气污染控制中心

	Effects of alkali and alkaline earth metals on Cu-SSZ-39 catalyst for the selective catalytic reduction of NOx with NH3
	Zhu, Na; Shan, Wenpo; Shan, Yulong; Du, Jinpeng; Lian, Zhihua; Zhang, Yan; He, Hong
刊名	CHEMICAL ENGINEERING JOURNAL
	2020-05-15
卷号	388 页码:1-2
关键词	Cu-SSZ-39 Alkali/alkaline earth metal Deactivation NH3-SCR Cu distribution
ISSN号	1385-8947
英文摘要	Alkali/alkaline earth metals from urea solution and engine lubricating oil can induce the chemical deactivation of NH3-SCR catalysts. Cu-SSZ-39, with excellent catalytic performance and hydrothermal stability, is thought to be a good choice for the NOx abatement from diesel vehicles. In this work, the effects of alkali/alkaline earth metals on Cu-SSZ-39 were investigated for the first time. The deactivation effects of alkali/alkaline earth metals followed the order of K > Mg > Ca > Na. The surface area, isolated Cu2+ ions and acid sites greatly decreased after the introduction of alkali/alkaline earth metals. Na and K had greater influence on the zeolite surface acidity than Ca and Mg with the same loading amount (1 mmol per gram catalyst). The deterioration of the zeolite structure and the transformation of isolated Cu2+ ions to CuOx were observed after poisoning by each of the alkali/alkaline earth metals. The distribution of copper species is a very important factor determining the SCR performance of Cu-SSZ-39 after alkali/alkaline earth metals poisoning. This work provides a new insight into understanding deactivation mechanisms in Cu-based small-pore zeolites.
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/45073]
专题	生态环境研究中心_大气污染控制中心
推荐引用方式 GB/T 7714	Zhu, Na,Shan, Wenpo,Shan, Yulong,et al. Effects of alkali and alkaline earth metals on Cu-SSZ-39 catalyst for the selective catalytic reduction of NOx with NH3[J]. CHEMICAL ENGINEERING JOURNAL,2020,388:1-2.
APA	Zhu, Na.,Shan, Wenpo.,Shan, Yulong.,Du, Jinpeng.,Lian, Zhihua.,...&He, Hong.(2020).Effects of alkali and alkaline earth metals on Cu-SSZ-39 catalyst for the selective catalytic reduction of NOx with NH3.CHEMICAL ENGINEERING JOURNAL,388,1-2.
MLA	Zhu, Na,et al."Effects of alkali and alkaline earth metals on Cu-SSZ-39 catalyst for the selective catalytic reduction of NOx with NH3".CHEMICAL ENGINEERING JOURNAL 388(2020):1-2.