Study of the Temperature-Programmed Reaction Synthesis of Early Transition Metal Carbide and Nitride Catalyst Materials from Oxide Precursors

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• 作者：John B. Claridge ; Andrew P. E. York ; Attila J. Brungs ; and Malcolm L. H. Green
• 刊名：Chemistry of Materials
• 出版年：2000
• 出版时间：January 2000
• 年：2000
• 卷：12
• 期：1
• 页码：132 - 142
• 全文大小：644K
• 年卷期：v.12,no.1(January 2000)
• ISSN：1520-5002

文摘

The synthesis of high surface area carbide and nitride materials from binary and ternaryoxides of vanadium, niobium, tantalum, molybdenum, and tungsten, suitable for use ascatalysts for a wide range of reactions, has been investigated via the temperature-programmed reaction (TPRe) method, in various gas mixtures. TPRe of oxides in CH₄/H₂,C₂H₆/H₂, or NH₃ yield materials with surface areas >40 m² g^-1. For the reaction with ethaneor ammonia the reaction appears to proceed topotactically while that with methane doesnot; however, the conversion of nitrides to carbides in CH₄/H₂ does appear to proceedtopotactically.