Molybdenum Carbide Formation in Molybdenum-Doped Organic and Carbon Aerogels

A Mo-doped organic aerogel and its corresponding carbonized derivative at 1000 °C were obtained. Both samples were treated in a H2/Ar flow. After this treatment, a mixture of Mo(VI) and Mo2C was detected in both samples. The results obtained indicate that the presence of H2 in the gas flow is necess...

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Bibliographic Details
Published in:Langmuir 2005-11, Vol.21 (23), p.10850-10855
Main Authors: Pérez-Cadenas, A. F, Maldonado-Hódar, F. J, Moreno-Castilla, C
Format: Article
Language:English
Subjects:
Chemistry
Colloidal state and disperse state
Exact sciences and technology
General and physical chemistry
Porous materials
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Summary:A Mo-doped organic aerogel and its corresponding carbonized derivative at 1000 °C were obtained. Both samples were treated in a H2/Ar flow. After this treatment, a mixture of Mo(VI) and Mo2C was detected in both samples. The results obtained indicate that the presence of H2 in the gas flow is necessary to obtain the carbide phase, due to the formation of CH4 or even CH x species that reduce and carburize the molybdenum oxide phase. Carburization of the Mo-doped organic aerogel yielded better results compared with carburization of the Mo-doped carbon aerogel.
ISSN:0743-7463
1520-5827
DOI:10.1021/la051969+