The mechanism and the kinetics of the formation of tungsten carbides (WC, W
2C) have been investigated. The synthesis of bulk pure-phase WC and WC nanoparticles supported on oxides and carbons was optimized. Reaction time, temperature, and tungsten loading are decisive parameters. Structural characterization was carried out by X-ray diffraction, N
2 adsorption, thermal analysis, and electron microscopy. Different reaction mechanisms and kinetic parameters were identified for the formation of bulk and supported WC and for low and high temperature regimes.
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The mechanism and the kinetics of the formation of tungsten carbides (WC, W
2C) have been investigated. The synthesis of bulk pure-phase WC and WC nanoparticles supported on oxides and carbons was optimized. Reaction time, temperature, and tungsten loading are decisive parameters. Structural characterization was carried out by X-ray diffraction, N
2 adsorption, thermal analysis, and electron microscopy. Different reaction mechanisms and kinetic parameters were identified for the formation of bulk...
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