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The structure and mechanistic impact of carbon deposits in dehydrogenation reactions

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McGregor,  James
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Tessonnier,  Jean-Philippe
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Hansen,  Thomas W.
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Su,  Dang Sheng
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Schlögl,  Robert
Inorganic Chemistry, Fritz Haber Institute, Max Planck Society;

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Citation

McGregor, J., Zeitler, J. A., Parrott, E. P. J., Gladden, L. F., Tessonnier, J.-P., Hansen, T. W., et al. (2009). The structure and mechanistic impact of carbon deposits in dehydrogenation reactions. Talk presented at EuropaCat IX. Salamanca [Spain]. 2009-08-30 - 2009-09-04.


Cite as: http://hdl.handle.net/11858/00-001M-0000-0010-F82C-8
Abstract
The catalytic dehydrogenation (DH) and oxidative dehydrogenation (ODH) of light alkanes is widely studied as a route to the formation of alkenes and di-alkenes, important precursor molecules for synthetic rubbers, plastics and a variety of other products [1-4]. Recent studies have focused on the non-oxidative DH of butane over alumina-supported vanadia catalysts [5-7]. In the present work, we provide a detailed understanding of both the role and structure of coke deposited on VOx/Al2O3 during reaction. A range of characterisation techniques have been employed including the first application of terahertz time domain spectroscopy (THz-TDS) to the study of coke. Complementary THz-TDS characterisation of carbonaceous materials including carbon nanofibres (CNFs) has also been conducted.