Performance of K and Ni substituted La1-xKxCo1-yNiyO3-delta perovskite catalysts used for soot combustion, NOx storage and simultaneous NOx-soot removal

doi:10.1016/j.fuel.2011.10.040

IHEP OpenIR > 多学科研究中心

	Performance of K and Ni substituted La1-xKxCo1-yNiyO3-delta perovskite catalysts used for soot combustion, NOx storage and simultaneous NOx-soot removal
	Li, ZQ; Meng, M; Dai, FF; Hu, TD; Xie, YN; Zhang, J;胡天斗; Xie YN(谢亚宁); Zhang J(张静)
	2012
发表期刊	FUEL (IF:4.601[JCR-2016],4.726[5-Year])
卷号	93 期号:1 页码:606-610
摘要	The nanometric substituted perovskite catalysts La1-xKxCo1-yNiyO3-delta (x = 0, 0.1; y = 0, 0.05, 0.1) were synthesized by citric acid complexation method, and employed for soot combustion, NOx storage and simultaneous NOx-soot removal. Their structures and physico-chemical properties were characterized by XRD, EXAFS, BET, SEM, H-2-TPR, and XPS techniques. When K and Ni are simultaneously introduced into LaCoO3 catalyst, soot combustion is largely accelerated, with the temperature (T-m) for maximal soot conversion lowered by at least 50 degrees C; moreover, NOx reduction by soot is also facilitated. The La0.9K0.1Co0.95Ni0.05O3-delta catalyst exhibits not only the lowest T-m (367 degrees C) temperature but also the highest soot combustion rate (67.3 mu g/s g catalyst). Meanwhile, the NOx reduction percentage over this catalyst can reach 21%. The kinetic results show that the activation energy for soot combustion over La0.9K0.1Co0.95Ni0.05O3-delta (81.34 kJ mol(-1)) is much lower than that over LaCoO3 (107.7 kJ mol(-1)). The H-2-TPR and XPS results show that the La0.9K0.1Co0.95Ni0.05O3-delta catalyst possesses better redox properties, more tetravalent cobalt ions and larger amount of surface adsorbed oxygen species, which determines its novel performance for soot combustion, NOx storage and soot-NOx removal. (C) 2011 Elsevier Ltd. All rights reserved.
关键词	Soot combustion NOx storage and reduction Perovskite K Ni
学科领域	Energy & Fuels; Engineering
DOI	10.1016/j.fuel.2011.10.040
收录类别	SCI ; ADS
WOS记录号	WOS:000299541400074
ADS Bibcode	2012Fuel...93..606L
ADS URL	https://ui.adsabs.harvard.edu/abs/2012Fuel...93..606L
ADS引文	https://ui.adsabs.harvard.edu/abs/2012Fuel...93..606L/citations
引用统计	正在获取... 被引频次：7 [ADS]
文献类型	期刊论文
条目标识符	https://ir.ihep.ac.cn/handle/311005/224023
专题	多学科研究中心
推荐引用方式 GB/T 7714	Li, ZQ,Meng, M,Dai, FF,et al. Performance of K and Ni substituted La1-xKxCo1-yNiyO3-delta perovskite catalysts used for soot combustion, NOx storage and simultaneous NOx-soot removal[J]. FUEL,2012,93(1):606-610.
APA	Li, ZQ.,Meng, M.,Dai, FF.,Hu, TD.,Xie, YN.,...&张静.(2012).Performance of K and Ni substituted La1-xKxCo1-yNiyO3-delta perovskite catalysts used for soot combustion, NOx storage and simultaneous NOx-soot removal.FUEL,93(1),606-610.
MLA	Li, ZQ,et al."Performance of K and Ni substituted La1-xKxCo1-yNiyO3-delta perovskite catalysts used for soot combustion, NOx storage and simultaneous NOx-soot removal".FUEL 93.1(2012):606-610.