Multiwalled carbon nanotubes oxidized by UV/H2O2 as catalyst for oxidative dehydrogenation of ethylbenzene

被引：44

作者：

Qui, N. V. ^{[1
]}

Scholz, P. ^{[1
]}

Krech, T. ^{[1
]}

Keller, T. F. ^{[2
]}

Pollok, K. ^{[3
]}

Ondruschka, B. ^{[1
]}

机构：

[1] Univ Jena, Inst Tech Chem & Environm Chem, D-07743 Jena, Germany

[2] Univ Jena, Inst Mat Sci & Technol, D-07743 Jena, Germany

[3] Univ Bayreuth, Bavarian Res Inst Expt Geochem & Geophys, D-95447 Bayreuth, Germany

来源：

CATALYSIS COMMUNICATIONS | 2011年 / 12卷 / 06期

关键词：

Oxidative dehydrogenation; Ethylbenzene; Multiwalled carbon nanotubes; UV light; Hydrogen peroxide; HYDROGEN-PEROXIDE; STYRENE; FENTON; MECHANISM; OXYGEN; WATER;

D O I：

10.1016/j.catcom.2010.11.007

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of hydroxyl radical (*OH)-assisted oxidation of multiwalled carbon nanotubes (MWCNTs) as catalysts for oxidative dehydrogenation of ethylbenzene (ODEB) to styrene was studied. Fourier transform infrared spectroscopy (FTIR). Raman spectroscopy and X-ray photoelectron spectroscopy (XPS) results indicated that the presence of hydroxyl radicals during UV/H2O2 oxidative treatment introduced significantly the amount of hydroxyl and carbonyl groups onto the surface of carbon nanotubes, leading to an improvement in the catalytic behavior. In the present work. UV/H35 MWCNTs obtained the best catalytic behavior with 91% styrene selectivity and 47% ethylbenzene conversion at 400 degrees C under conventional heating. Transmission electron microscopy (TEM) of UV/H35 MWCNTs showed the formation of new sp(2)-carbon layers on the wall of nanotubes after the stability test. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：464 / 469

页数：6

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