“…Molybdenum carbide, one of the most important compounds among transition metal carbides, due to its promising physical and chemical properties, such as a high melting temperature, high hardness, and high resistance to corrosion and oxidation, high abrasion resistance, good electrical conductivity. So it is widely used for cutting materials, abrasive, anti-wear and aerospace materials [1][2][3][4]. At the same time, Mo 2 C is used as a kind of catalyst in various reactions [5][6][7][8][9][10]; even it is usually superior to the noble metal catalysts in selectivity, stability and resistance to poison, so that Mo 2 C might be considered as a cheaper substitute for the noble metal catalysts.…”