Efficient Metal-Free Catalytic Reaction Pathway for Selective Oxidation of Substituted Phenols

IMR OpenIR

	Efficient Metal-Free Catalytic Reaction Pathway for Selective Oxidation of Substituted Phenols
	Lin, Yangming; Li, Bo; Feng, Zhenbao; Kim, Yoong Ahm; Endo, Morinobu; Su, Dang Sheng; dssu@imr.ac.cn
	2015
发表期刊	ACS CATALYSIS
ISSN	2155-5435
卷号	5 期号:10 页码:5921-5926
摘要	Selective oxidation of substituted phenols to p-benzoquinones is known to be inefficient because of the competing C-O coupling reaction caused by phenoxy radicals. The poor stability of conventional metal-based catalysts represents another bottleneck for industrial application. Here, we describe a metal-free reaction pathway in which onion-like carbon (OLC) as a low-cost catalyst exhibits excellent catalytic activity and stability in the selective oxidation of mono-, di- and trisubstituted phenols to their corresponding p-benzoquinones, even better than the reported metal-based catalysts (e.g., yield, stability) and industrial catalysts for particular substrates. Together with XPS, Raman, DFT calculations, and a series of comparative experiments, we demonstrate that the zigzag configuration as a type of carbon defects may play a crucial role in these reactions by stabilizing the intermediate phenoxy radicals.
部门归属	[lin, yangming ; li, bo ; feng, zhenbao ; su, dang sheng] chinese acad sci, shenyang natl lab mat sci, inst met res, shenyang 110016, peoples r china ; [lin, yangming] univ sci & technol china, sch chem & mat sci, hefei 230001, peoples r china ; [kim, yoong ahm] chonnam natl univ, sch polymer sci & engn, kwangju 500757, south korea ; [endo, morinobu] shinshu univ, carbon inst sci & technol, nagano 3808553, japan ; [su, dang sheng] max planck gesell, fritz haber inst, dept inorgan chem, d-14195 berlin, germany
关键词	Onion-like Carbon Molecular Model Catalysts Phenol Selective Oxidation Metal-free
资助者	MOST [2011CBA00504]; NSFC of China [21133010, 51221264, 21261160487]; Chinese Academy of Sciences [XDA09030103]; Institute of Metal Research [Y3NBA211A1]
收录类别	sci
语种	英语
WOS记录号	WOS:000362391500027
引用统计	被引频次：28[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/321006/74801
专题	中国科学院金属研究所
通讯作者	dssu@imr.ac.cn
推荐引用方式 GB/T 7714	Lin, Yangming,Li, Bo,Feng, Zhenbao,et al. Efficient Metal-Free Catalytic Reaction Pathway for Selective Oxidation of Substituted Phenols[J]. ACS CATALYSIS,2015,5(10):5921-5926.
APA	Lin, Yangming.,Li, Bo.,Feng, Zhenbao.,Kim, Yoong Ahm.,Endo, Morinobu.,...&dssu@imr.ac.cn.(2015).Efficient Metal-Free Catalytic Reaction Pathway for Selective Oxidation of Substituted Phenols.ACS CATALYSIS,5(10),5921-5926.
MLA	Lin, Yangming,et al."Efficient Metal-Free Catalytic Reaction Pathway for Selective Oxidation of Substituted Phenols".ACS CATALYSIS 5.10(2015):5921-5926.