Oxidative Purification of Carbon Nanotubes and Its Impact on Catalytic Performance in Oxidative Dehydrogenation Reactions

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	Oxidative Purification of Carbon Nanotubes and Its Impact on Catalytic Performance in Oxidative Dehydrogenation Reactions
	A. Rinaldi; J. Zhang; B. Frank; D. S. Su; S. B. A. Hamid; R. Schlogl
	2010
发表期刊	Chemsuschem
ISSN	1864-5631
卷号	3 期号:2 页码:254-260
摘要	Oxidative purification with mild diluted HNO(3) followed by NaOH washing lowers the amount of amorphous carbon attached to multiwalled carbon nanotubes (CNTs). The graphitic structure improves remarkably by further annealing in argon at elevated temperatures, that is, 1173, 1573, and 1973 K. The influence of the purification treatment on the catalytic activity of the CNTs is investigated for the oxidative dehydrogenation (ODH) of ethylbenzene and propane as probe reactions. All samples tend to approach an appropriately ordered structure and Raman analysis of the used samples displays a D/G band ratio of 0 95-1 42. Oxygen functionalities are partly removed by the annealing treatment and can be rebuilt to some extent by oxygen molecules in the ODH reactant flow. The presence of amorphous carbon is detrimental to the catalytic performance as it allows for unwanted functional groups occurring in parallel with the formation of the selective (di)ketonic active sites
部门归属	[rinaldi, ali; zhang, jian; frank, benjamin; su, dang sheng; schloegl, robert] max planck soc, fritz haber inst, dept inorgan chem, d-14195 berlin, germany. [zhang, jian] chinese acad sci, inst met res, catalysis & mat div, shenyang natl lab mat sci, shenyang 110016, peoples r china. [hamid, sharifah bee abd] univ malaya, combinatorial technol & catalysis res ctr combica, kuala lumpur 50603, malaysia.;rinaldi, a (reprint author), max planck soc, fritz haber inst, dept inorgan chem, faradayweg 4-6, d-14195 berlin, germany
关键词	Carbon Catalysis Dehydrogenation Nanotubes Oxidation Activated Carbon Double-wall Selective Oxidation Raman-spectroscopy Thermal-desorption Amorphous-carbon Heat-treatment D-band Graphite Gasification
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WOS记录号	WOS:000275352600025
引用统计	被引频次：77[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/321006/31423
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	A. Rinaldi,J. Zhang,B. Frank,et al. Oxidative Purification of Carbon Nanotubes and Its Impact on Catalytic Performance in Oxidative Dehydrogenation Reactions[J]. Chemsuschem,2010,3(2):254-260.
APA	A. Rinaldi,J. Zhang,B. Frank,D. S. Su,S. B. A. Hamid,&R. Schlogl.(2010).Oxidative Purification of Carbon Nanotubes and Its Impact on Catalytic Performance in Oxidative Dehydrogenation Reactions.Chemsuschem,3(2),254-260.
MLA	A. Rinaldi,et al."Oxidative Purification of Carbon Nanotubes and Its Impact on Catalytic Performance in Oxidative Dehydrogenation Reactions".Chemsuschem 3.2(2010):254-260.