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  Supported Carbon Nanofibers for the Fixed-Bed Synthesis of Styrene

Delgado, J. J., Vieira, R., Rehmann, G., Su, D. S., Keller, N., Ledoux, M. J., et al. (2006). Supported Carbon Nanofibers for the Fixed-Bed Synthesis of Styrene. Carbon, 44(4), 809-812. doi:10.1016/j.carbon.2005.10.040.

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Delgado, Juan J.1, Author           
Vieira, Ricardo, Author
Rehmann, Guillaume, Author
Su, Dang Sheng1, Author           
Keller, Nicolas, Author
Ledoux, Marc J., Author
Schlögl, Robert1, Author           
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1Inorganic Chemistry, Fritz Haber Institute, Max Planck Society, ou_24023              

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Free keywords: Catalyst, carbon composites, carbon fibers, scanning electron microscopy, X-ray photoelectron spectroscopy, catalytic properties Carbon for selective oxidative dehydrogenation reactions
 Abstract: Nanocarbons with macroscopic shaping have been studied as catalyst for the oxidative dehydogenation of ethylbenzene to styrene. Similarly to powdery nanocarbons, the catalyst exhibited high and stable performances, but without the detrimental drawbacks related to the use of fine powder form catalysts for technical applications in fixed-bed reactors. Carbon nanofibers were supported over a macroscopic graphite felt, using CCVD of ethane in the presence of hydrogen. The final material exhibits an open structure that avoids the limitations resulting from the powdery primary structure of nanocarbons. The ethylbenzene conversion can be significantly increased by increasing the space time, whereas a slight decrease in the selectivity to styrene was observed. A stable yield of 38% of styrene was obtained with a selectivity of 85% at 440ºC. Nor pressure drop neither moving-bed phenomena were observed what makes it attractive for gas-phase fixed-bed industrial applications.

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Language(s): eng - English
 Dates: 2006
 Publication Status: Issued
 Pages: -
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 Table of Contents: -
 Rev. Type: Peer
 Identifiers: eDoc: 241146
DOI: 10.1016/j.carbon.2005.10.040
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Title: Carbon
Source Genre: Journal
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Pages: - Volume / Issue: 44 (4) Sequence Number: - Start / End Page: 809 - 812 Identifier: -