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Oxidative dehydrogenation on nanocarbon: Effect of heteroatom doping
Liu, Wei; Wang, Chao; Herold, Felix; Etzold, Bastian J. M.; Su, Dangsheng; Qi, Wei
2019-12-05
Source PublicationAPPLIED CATALYSIS B-ENVIRONMENTAL
ISSN0926-3373
Volume258
AbstractKinetic analysis is a powerful and effective strategy to reveal the physical-chemical nature of the promotion effect of heteroatoms to nanocarbon catalysts. The present work reported the mechanistic and kinetic analysis of ethylbenzene oxidative dehydrogenation (ODH) reactions on heteroatom (N or B) doped and undoped carbon nanotube (CNT) catalysts via active site titration, kinetic isotope effect and single reactant surface reaction experiments etc. The physical-chemical meanings behind the elementary step rate and equilibrium constants were revealed and applied for interpretations of the promotion effect of heteroatoms at molecular level. Nitrogen doped CNT exhibited both higher rate and equilibrium constants for C-H bond dissociation and O-2 adsorption than undoped one via facilitating the electron transfer process. The evolution of the active sites could be quantitatively described with rate equation via the theory of most abundant surface intermediates, which provides in depth understandings on the mechanism and structure-function relations in carbon catalyzed redox reactions.
KeywordOxidative dehydrogenation Heteroatom doping Carbon materials Kinetics Heterogeneous catalysis
Indexed BySCI
Language英语
WOS IDWOS:000487570000040
PublisherELSEVIER
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/80562
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
Liu, Wei,Wang, Chao,Herold, Felix,et al. Oxidative dehydrogenation on nanocarbon: Effect of heteroatom doping[J]. APPLIED CATALYSIS B-ENVIRONMENTAL,2019,258.
APA Liu, Wei,Wang, Chao,Herold, Felix,Etzold, Bastian J. M.,Su, Dangsheng,&Qi, Wei.(2019).Oxidative dehydrogenation on nanocarbon: Effect of heteroatom doping.APPLIED CATALYSIS B-ENVIRONMENTAL,258.
MLA Liu, Wei,et al."Oxidative dehydrogenation on nanocarbon: Effect of heteroatom doping".APPLIED CATALYSIS B-ENVIRONMENTAL 258(2019).
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