Direct observation of carbon nanotube formation in Pd/h-ZSM-5 and MoO3/H-ZSM-5 based methane activation catalysts

The nature of carbonaceous species deposited upon MoO3/H-ZSM-5 and Pd/H-ZSM-5 based catalysts during methane activation at 700 °C has been studied. TEM evidences the formation of open-ended multi-walled carbon nanotubes on MoO3/H-ZSM-5 based dehydroaromatisation catalysts. Pd/H-ZSM-5 is more active,...

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Veröffentlicht in:	Catalysis letters 2007-08, Vol.116 (3-4), p.122-127
Hauptverfasser:	BURNS, S, GALLAGHER, J. G, HARGREAVES, J. S. J, HARRIS, P. J. F
Format:	Artikel
Sprache:	eng
Schlagworte:	Activation Carbon Catalysis Catalysts Chemistry Exact sciences and technology General and physical chemistry Ion-exchange Methane Molybdenum oxides Molybdenum trioxide Multi wall carbon nanotubes Surface physical chemistry Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Zeolites: preparations and properties
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Zusammenfassung:	The nature of carbonaceous species deposited upon MoO3/H-ZSM-5 and Pd/H-ZSM-5 based catalysts during methane activation at 700 °C has been studied. TEM evidences the formation of open-ended multi-walled carbon nanotubes on MoO3/H-ZSM-5 based dehydroaromatisation catalysts. Pd/H-ZSM-5 is more active, exclusively towards methane cracking and post-reaction analysis reveals the distribution of different carbonaceous species is more homogeneous which TEM demonstrates to be in the form of closed-end multi-walled carbon nanotubes.
ISSN:	1011-372X 1572-879X
DOI:	10.1007/s10562-007-9125-6