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          Institute: Fritz-Haber-Institut     Collection: Inorganic Chemistry     Display Documents

ID: 435195.0, Fritz-Haber-Institut / Inorganic Chemistry
Influence of the microstructure of carbon nanotubes on the oxidative dehydrogenation of ethylbenzene to styrene
Authors:Delgado, Juan José; Chen, Xiaowei; Tessonnier, Jean-Philippe; Schuster, Manfred E.; Del Rio, E.; Schlögl, Robert; Su, Dang Sheng
Research Context:Carbon
Date of Publication (YYYY-MM-DD):2010-02-26
Title of Journal:Catalysis Today
Journal Abbrev.:Catal. Today
Issue / Number:1-2
Start Page:49
End Page:54
Copyright:© 2009 Elsevier B.V. All rights reserved.
Review Status:Peer-review
Audience:Experts Only
Abstract / Description:The effect of graphitization of carbon nanotubes (CNTs) on the oxidative dehydrogenation of ethylbenzene to styrene was studied. An elimination of functional groups was observed by treating the catalyst under inert gas at temperatures below 1100 °C, while its microstructure and reactivity in TPO experiments did not change significantly. A decrease in the initial catalytic performances was observed, but the functional groups can be regenerated during the catalytic reaction, thus leading to a significant improvement in the catalytic activity. Annealing CNTs above 1500 °C leads to a well graphitisized wall structure of CNTs with a nearly oxygen-free surface with a low number of defects. The obtained samples show low but stable catalytic performances, indicating that the oxygenated active sites cannot be regenerated on this well-organized and low defective surface.
Free Keywords:Ethylbenzene; Styrene; Oxidative dehydrogenation; Carbon nanotube
External Publication Status:published
Document Type:Article
Communicated by:Robert Schlögl
Affiliations:Fritz-Haber-Institut/Inorganic Chemistry/Micro- and Nanostructure / Carbon
Fritz-Haber-Institut/Inorganic Chemistry/Inorganic Chemistry
External Affiliations:Departamento de Ciencia de los Materiales e Ingeniería Metalúrgica y Química Inorgánica. Facultad de Ciencias, Universidad de Cádiz, E-11510 Puerto Real (Cádiz), Spain
Identifiers:URL:http://dx.doi.org/10.1016/j.cattod.2009.07.103 [only for subscriber]
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