Abstract—

We have studied the effect of precursors on the synthesis conditions and characteristics of molybdenum nitrides. Mo, MoO₃, and MgMoO₄ powders were nitrided in flowing ammonia at temperatures in the range 500–800°C. The use of molybdenum nanopowder as a precursor has made it possible to reduce the synthesis temperature and time. We have demonstrated the possibility of direct ammonolysis of the double oxide MgMoO₄. Using this molybdate, we have obtained a material with a specific surface area up to 29 m²/g, which is a factor of 2 to 3 larger than that reached by nitriding MoO₃. In all cases, the synthesis products consisted of the γ- and β-phases of Mo₂N, with cubic and tetragonal lattices, respectively.

中文翻译：

---

氮化钼的合成

摘要-

我们已经研究了前驱物对合成条件和氮化钼特性的影响。Mo，MoO ₃和MgMoO ₄粉末在流动的氨中在500-800°C的温度下被氮化。钼纳米粉作为前体的使用使得可以降低合成温度和时间。我们已经证明了直接氧化双氧化物MgMoO ₄的可能性。使用这种钼酸盐，我们获得了一种比表面积高达29 m ² / g的材料，该材料比氮化MoO ₃所达到的材料大2至3倍。在所有情况下，合成产物均由Mo ₂的γ相和β相组成N，分别具有立方和四方晶格。