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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
Source PublicationAMER CHEMICAL SOC
ISSN2155-5435
Volume7Issue:10Pages:7305-7311
AbstractNanocarbon 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.
description.department[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
KeywordCarbon Nanotubes Electrophilic Oxygen Phenol Groups Reduction Oxidative Dehydrogenation
Subject AreaChemistry, Physical
Funding OrganizationChina Petrochemical Corp. [S213043]
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/79054
Collection中国科学院金属研究所
Corresponding AuthorRong, 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.
Recommended Citation
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.
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