Oxidative dehydrogenation of ethylbenzene on nanocarbon: Kinetics and reaction mechanism

doi:10.1016/j.jcat.2018.09.023

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	Oxidative dehydrogenation of ethylbenzene on nanocarbon: Kinetics and reaction mechanism
	Liu, W 1; Wang, C ; Su, DS ; Qi, W 1
刊名	JOURNAL OF CATALYSIS
	2018-12-01
卷号	368 页码:1-7
关键词	Heterogeneous catalysis Reaction kinetics Oxidative dehydrogenation TOF Carbon catalysis
ISSN号	0021-9517
DOI	10.1016/j.jcat.2018.09.023
英文摘要	Active site titration, kinetic analysis, isotope and temperature programmed surface reaction experiments have been applied to reveal the nature of nanocarbon catalyzed alkane oxidative dehydrogenation reactions. The catalytic reaction involves the redox cycle of ketonic carbonyl-hydroxyl pairs on nanocarbon materials, during which the substrate of ethylbenzene (EB) dehydrogenates to product styrene, and the molecular oxygen re-oxidizes the catalysts yielding water. The rate equation based on the mechanistic interpretations of the catalytic reactions provides intrinsic rate or equilibrium constants, which have their specific physicochemical meanings and could be directly linked to the catalytic process. The proposed rate equation could also accurately describe the effects of reactant (EB or O-2) pressures and isotopomers (deuterated-EB or O-18(2)) on rate data, and provide a quantitative analysis on the evolution and content of surface intermediates on carbon catalysts, which is a reliable descriptor of the intrinsic reactivity and essential to establish the structure-function relations for carbon catalyzed redox reactions. (C) 2018 Elsevier Inc. All rights reserved.
学科主题	Chemistry, Physical ; Engineering, Chemical
语种	英语
WOS记录号	WOS:000452582500001
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/79780]
专题	金属研究所_中国科学院金属研究所
作者单位	1.Shenyang Pharmaceut Univ, Sch Med Devices, 103 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Liu, W,Wang, C,Su, DS,et al. Oxidative dehydrogenation of ethylbenzene on nanocarbon: Kinetics and reaction mechanism[J]. JOURNAL OF CATALYSIS,2018,368:1-7.
APA	Liu, W,Wang, C,Su, DS,&Qi, W.(2018).Oxidative dehydrogenation of ethylbenzene on nanocarbon: Kinetics and reaction mechanism.JOURNAL OF CATALYSIS,368,1-7.
MLA	Liu, W,et al."Oxidative dehydrogenation of ethylbenzene on nanocarbon: Kinetics and reaction mechanism".JOURNAL OF CATALYSIS 368(2018):1-7.