Transient response study of NO reduction with H-2 on Co4N/gamma-Al2O3 catalyst

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	Transient response study of NO reduction with H-2 on Co4N/gamma-Al2O3 catalyst
	Yao, Zhiwei 1,2; Zhang, Xiaohong 1
刊名	reaction kinetics mechanisms and catalysis
	2013-08-01
卷号	109 期号:2 页码:461-473
关键词	Co4N/gamma-Al2O3 NO dissociation NO reduction Reaction mechanism Transient experiments
英文摘要	the reduction of no with h-2 was studied with transient response experiments on a co4n/gamma-al2o3 catalyst. in 1 % no/1 % h-2/he step-response on co4n/gamma-al2o3 catalyst at 300 a degrees c, there were three main stages, viz. initial state, steady state and deactivated state. no reduction with h-2 generated n-2 and h2o as the main products and nh3 as the by-product during the steady state. deactivation of the co4n/gamma-al2o3 catalyst was due to heavy accumulation of oxygen on the surface. in order to retain a steady-state no dissociation, the formation of h2o on the catalyst surface was the most crucial step for the removal of surface oxygen, this depended on the no:h-2 ratio and the reaction temperature. the results indicated that a no:h-2 ratio of 1:5 and a reaction temperature of 600 a degrees c was determined to keep the co4n/gamma-al2o3 catalyst surface sites active for catalytic reduction of no. based on the experimental results, the mechanism of reduction of no with h-2 on co4n/gamma-al2o3 catalyst was proposed.
WOS标题词	science & technology ; physical sciences
类目[WOS]	chemistry, physical
研究领域[WOS]	chemistry
关键词[WOS]	nitrides ; hydrogen ; co ; decomposition ; dissociation
收录类别	SCI
语种	英语
WOS记录号	WOS:000321923200012
内容类型	期刊论文
源URL	[http://ir.giec.ac.cn/handle/344007/9123]
专题	中国科学院广州能源研究所
作者单位	1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China 2.Dalian Univ Technol, Dalian 116024, Peoples R China
推荐引用方式 GB/T 7714	Yao, Zhiwei,Zhang, Xiaohong. Transient response study of NO reduction with H-2 on Co4N/gamma-Al2O3 catalyst[J]. reaction kinetics mechanisms and catalysis,2013,109(2):461-473.
APA	Yao, Zhiwei,&Zhang, Xiaohong.(2013).Transient response study of NO reduction with H-2 on Co4N/gamma-Al2O3 catalyst.reaction kinetics mechanisms and catalysis,109(2),461-473.
MLA	Yao, Zhiwei,et al."Transient response study of NO reduction with H-2 on Co4N/gamma-Al2O3 catalyst".reaction kinetics mechanisms and catalysis 109.2(2013):461-473.