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Lee, Jae Sung
Eco-friendly Catalysis and Energy Lab
Research Interests
  • Photocatalytic water splitting, artificial photosynthesis, fuel cells, heterogeneous catalysis

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Effect of the reactive gas on the solid-state transformation of molybdenum trioxide to carbides and nitrides

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Title
Effect of the reactive gas on the solid-state transformation of molybdenum trioxide to carbides and nitrides
Other Titles
Effect of the reactive gas on the solid-state transformation of molybdenum trioxide to carbides and nitrides
Author
Li, SenziKim, Won BaeLee, Jae Sung
Keywords
SURFACE-AREA; SONOCHEMICAL SYNTHESIS; CATALYSTS; TUNGSTEN; CARBON; MO2N; HYDROGENATION; POWDERS
Issue Date
1998-07
Publisher
AMER CHEMICAL SOC
Citation
CHEMISTRY OF MATERIALS, v.10, no.7, pp.1853 - 1862
Abstract
A temperature-programmed reaction method was employed to investigate the solid-state transformation of molybdenum oxides to carbides or nitrides by reaction with various reacting gases such as H-2 and NH3 and the mixtures of CH4 and H-2 (CH4/H-2 1/4), CO and H-2 (CO/H-2 1/4), and N-2 and H-2 (N-2/H-2 1/3 and 3/1). The solid-state transformation of MoO3 to nitride by reaction with NH3 was topotactic. In contrast, MoO3 took a nontopotactic route by reaction with the other gases or their mixtures, leading to products that were thermodynamically stable under the investigated conditions. For the synthesis to take a topotactic route it required that the carburization or nitridation occurs in the initial stage of reduction to form intermediate phases containing carbon or nitrogen at low temperatures
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DOI
10.1021/cm9800229
ISSN
0897-4756
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ECHE_Journal Papers
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