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利用爆炸辅助的化学气相沉积法成功地制备了纳米碳颗粒负载碳化钼的复合物,并利用TEM和XRD对合成纳米复合物的形貌和结构进行了表征;以环己烷脱氢反应为探针对其催化性能进行了评价,考察了钼含量对碳化钼复合物催化性能的影响。结果表明,纳米碳颗粒由有序度较低的石墨片层组成,形貌近似球形,粒度分布均匀,大小约为20nm,原位修饰的六方碳化钼分散在碳颗粒表面;钼含量不同,复合物对环己烷脱氢催化性能有较大差异,当钼含量为15%时,催化性能最好。
The morphology and structure of the synthesized nanocomposites were successfully characterized by TEM and XRD. The results of cyclic dehydrogenation of cyclohexane The catalytic performance was evaluated, and the effect of molybdenum content on the catalytic performance of the molybdenum carbide composite was investigated. The results show that the nano-carbon particles are composed of graphite layers with low degree of order. The morphology of the nano-carbon particles is spherical and the size distribution is uniform. The size of the nano-carbon particles is about 20nm. In situ modified hexagonal molybdenum carbide is dispersed on the surface of the carbon particles. The catalytic properties of cyclohexane dehydrogenation are quite different, when the molybdenum content of 15%, the best catalytic performance.