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Transient response study of NO reduction with H-2 on Co4N/gamma-Al2O3 catalyst
Yao, Zhiwei1,2; Zhang, Xiaohong1
2013-08-01
Source PublicationREACTION KINETICS MECHANISMS AND CATALYSIS
Volume109Issue:2Pages:461-473
AbstractThe 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.
SubtypeArticle
KeywordCo4n/gamma-al2o3 No Dissociation No Reduction Reaction Mechanism Transient Experiments
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.1007/s11144-013-0560-7
WOS Subject ExtendedChemistry
WOS KeywordNITRIDES ; HYDROGEN ; CO ; DECOMPOSITION ; DISSOCIATION
Indexed BySCI
Language英语
WOS SubjectChemistry, Physical
WOS IDWOS:000321923200012
Citation statistics
Document Type期刊论文
Identifierhttp://ir.giec.ac.cn/handle/344007/9123
Collection中国科学院广州能源研究所
Affiliation1.Chinese Acad Sci, Guangzhou Inst Energy Convers, Guangzhou 510640, Guangdong, Peoples R China
2.Dalian Univ Technol, Dalian 116024, Peoples R China
Recommended Citation
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.
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