Exploration on synthesis of activated carbon supported molybdenum carbide, nitride and phosphide via carbothermal reduction route
Exploration on synthesis of activated carbon supported molybdenum carbide, nitride and phosphide via carbothermal reduction route
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DOI：
10.1016/j.jallcom.2008.07.130
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发表时间：
2009-05
影响因子：
6.2
通讯作者：
Z. W. Yao
中科院分区：
文献类型：
--
作者：
Z. W. Yao
探索了碳热还原法制备活性炭负载碳化钼、氮化钼和磷化钼的工艺。用X射线衍射技术对所得样品进行了表征。结果表明，在950°C碳热还原条件下，在活性炭载体上可以合成MoP;在950°C少量氢气存在下，也可以合成β-Mo 2C;而γ-Mo 2N不能通过碳热还原途径合成。从制备条件来看，碳热还原法制备钼基化合物的难易程度为MoP<β-Mo 2C <γ-Mo 2N。通过对生成能的分析，可以了解碳热还原法制备钼基化合物的困难性和可行性。
A carbothermal reduction route was explored for the preparation of activated carbon supported molybdenum carbide, nitride and phosphide. The resultant samples were characterized by X-ray diffraction technique. The results showed that the MoP can be formed on activated carbon support by carbothermal reduction at 950°C; the β-Mo2C can be also synthesized by carbothermal reduction in the presence of a small amount of hydrogen at 950°C; whereas the γ-Mo2N cannot be synthesized via carbothermal reduction route. Considering the conditions of preparation, we observed that the difficulty in the preparation of Mo-based compounds by carbothermal reduction route ranked in the order of MoP<β-Mo2C<γ-Mo2N. An analysis of formation energy was presumably related to understand the difficulty and feasibility in the preparation of these Mo-based compounds by carbothermal reduction route.