Improving the Alkene Selectivity of Nanocarbon-Catalyzed Oxidative Dehydrogenation of n-Butane by Refinement of Oxygen Species

IMR OpenIR

	Improving the Alkene Selectivity of Nanocarbon-Catalyzed Oxidative Dehydrogenation of n-Butane by Refinement of Oxygen Species
	Li, Jiaquan; Yu, Peng; Xie, Jingxin; Liu, Jie; Wang, Zehua; Wu, Chongchong; Rong, Junfeng; Liu, Hongyang; Su, Dangsheng; Rong, JF (reprint author), Sinopec, Res Inst Petr Proc, 18 Xueyuan Rd, Beijing 100083, Peoples R China.; Su, DS (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China.
	2017-10-01
发表期刊	AMER CHEMICAL SOC
ISSN	2155-5435
卷号	7 期号:10 页码:7305-7311
摘要	Nanocarbon materials are promising catalysts of oxidative dehydrogenation (ODH) of alkanes, but improving the alkene selectivity remains a challenge. A deep understanding and thorough identification of oxygen species on nanocarbons are strongly required for approaches to nanocarbon modification. Successful application of iodometric titration in quantitative determination of the amount of electrophilic oxygen on the surface of carbon nanotubes has been performed in this work. Electrophilic oxygen species have been identified as the main culprits for deep oxidation of ODH of n-butane via a clear correlation between the amount of electrophilic oxygen and combustion reaction rate. By chemical reduction and annealing in nitrogen, the alkene selectivity is significantly improved. Phenol groups are found to play an essential role in improving alkene selectivity. The study reveals that higher alkene selectivity can be achieved by both eliminating deep oxidation active sites and facilitating the formation of phenol and carbonyl groups.; Nanocarbon materials are promising catalysts of oxidative dehydrogenation (ODH) of alkanes, but improving the alkene selectivity remains a challenge. A deep understanding and thorough identification of oxygen species on nanocarbons are strongly required for approaches to nanocarbon modification. Successful application of iodometric titration in quantitative determination of the amount of electrophilic oxygen on the surface of carbon nanotubes has been performed in this work. Electrophilic oxygen species have been identified as the main culprits for deep oxidation of ODH of n-butane via a clear correlation between the amount of electrophilic oxygen and combustion reaction rate. By chemical reduction and annealing in nitrogen, the alkene selectivity is significantly improved. Phenol groups are found to play an essential role in improving alkene selectivity. The study reveals that higher alkene selectivity can be achieved by both eliminating deep oxidation active sites and facilitating the formation of phenol and carbonyl groups.
部门归属	[li, jiaquan ; yu, peng ; xie, jingxin ; liu, jie ; wang, zehua ; wu, chongchong ; rong, junfeng] sinopec, res inst petr proc, 18 xueyuan rd, beijing 100083, peoples r china ; [liu, hongyang] chinese acad sci, inst met res, shenyang natl lab mat sci, wenhua rd 72, shenyang 110016, liaoning, peoples r china ; [su, dangsheng] chinese acad sci, dalian inst chem phys, dalian natl lab clean energy, 457 zhongshan rd, dalian 116023, peoples r china
关键词	Carbon Nanotubes Electrophilic Oxygen Phenol Groups Reduction Oxidative Dehydrogenation
学科领域	Chemistry, Physical
资助者	China Petrochemical Corp. [S213043]
收录类别	SCI
语种	英语
WOS记录号	WOS:000412795700101
引用统计	被引频次：31[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/79054
专题	中国科学院金属研究所
通讯作者	Rong, JF (reprint author), Sinopec, Res Inst Petr Proc, 18 Xueyuan Rd, Beijing 100083, Peoples R China.; Su, DS (reprint author), Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, 457 Zhongshan Rd, Dalian 116023, Peoples R China.
推荐引用方式 GB/T 7714	Li, Jiaquan,Yu, Peng,Xie, Jingxin,et al. Improving the Alkene Selectivity of Nanocarbon-Catalyzed Oxidative Dehydrogenation of n-Butane by Refinement of Oxygen Species[J]. AMER CHEMICAL SOC,2017,7(10):7305-7311.
APA	Li, Jiaquan.,Yu, Peng.,Xie, Jingxin.,Liu, Jie.,Wang, Zehua.,...&Su, DS .(2017).Improving the Alkene Selectivity of Nanocarbon-Catalyzed Oxidative Dehydrogenation of n-Butane by Refinement of Oxygen Species.AMER CHEMICAL SOC,7(10),7305-7311.
MLA	Li, Jiaquan,et al."Improving the Alkene Selectivity of Nanocarbon-Catalyzed Oxidative Dehydrogenation of n-Butane by Refinement of Oxygen Species".AMER CHEMICAL SOC 7.10(2017):7305-7311.