Oxidative Dehydrogenation on Nanocarbon: Revealing the Catalytic Mechanism using Model Catalysts

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	Oxidative Dehydrogenation on Nanocarbon: Revealing the Catalytic Mechanism using Model Catalysts
	Guo, Xiaoling ; Qi, Wei ; Liu, Wei ; Yan, Pengqiang ; Li, Fan ; Liang, Changhai ; Su, Dangsheng
刊名	ACS CATALYSIS
	2017-02-01
卷号	7 期号:2 页码:1424-1427
关键词	heterogeneous catalysis carbon catalysis alkane oxidative dehydrogenation model catalysts kinetics
ISSN号	2155-5435
通讯作者	Qi, W ; Su, DS (reprint author), Chinese Acad Sci, Shenyang Natl Lab Mat Sci, Inst Met Res, Shenyang 110016, Peoples R China.
中文摘要	Model catalysts offer a direct method to determine the active-site structures and mechanisms on nanocarbon catalysts. In this report, we show that the ketonic carbonyl groups are the catalytic center of the nanocarbon-catalyzed alkane oxidative dehydrogenation (ODH) reaction, and we reveal the catalytic mechanism using conjugated polymeric model catalysts containing only ketonic carbonyl groups. An in situ infrared (IR) analysis provides spectroscopic evidence of the "working" configurations of the active sites in association with the redox cycle of the ketonic carbonyl-hydroxyl pairs. Carbonyl reduction (H abstraction from hydrocarbon) is shown to be a kinetically relevant step. An O-18 isotope tracer experiment further shows that the activation and exchange of molecular oxygen at the surface active sites are fast processes under common reaction conditions.
学科主题	Chemistry, Physical
收录类别	SCI
资助信息	NSFC [21573256, 91645114, 2161101164, 21303226, 51521091]; Joint Research Program of Natural Science Foundation of Liaoning Province-Shenyang National Laboratory for Materials Science [2015021010]; Youth Innovation Promotion Association, CAS
语种	英语
公开日期	2017-08-17
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/78320]
专题	金属研究所_中国科学院金属研究所
推荐引用方式 GB/T 7714	Guo, Xiaoling,Qi, Wei,Liu, Wei,et al. Oxidative Dehydrogenation on Nanocarbon: Revealing the Catalytic Mechanism using Model Catalysts[J]. ACS CATALYSIS,2017,7(2):1424-1427.
APA	Guo, Xiaoling.,Qi, Wei.,Liu, Wei.,Yan, Pengqiang.,Li, Fan.,...&Su, Dangsheng.(2017).Oxidative Dehydrogenation on Nanocarbon: Revealing the Catalytic Mechanism using Model Catalysts.ACS CATALYSIS,7(2),1424-1427.
MLA	Guo, Xiaoling,et al."Oxidative Dehydrogenation on Nanocarbon: Revealing the Catalytic Mechanism using Model Catalysts".ACS CATALYSIS 7.2(2017):1424-1427.