The method of reactive ball milling was used to synthesize MgH₂-based composites adding nanoparticles of complex oxides RTO₃ (R-rare earth and T-transition metals) as catalysts and graphite. All composites contain 5 wt.% of complex oxides Dy_0.5Nd_0.5FeO₃ and TbFe_0.5Cr_0.5O₃ synthesized by the sol-gel method, and some of them additionally contain 3 wt.% of graphite. The oxides have an orthorhombic perovskite structure (GdFeO₃ type) and are characterized by an average particle size of 80–300 nm. The effect of perovskites on the hydrogenation of magnesium during the milling process and the improvement of hydrogen sorption-desorption kinetics is demonstrated. The Mg–Dy_0.5Nd_0.5FeO₃ and Mg–TbFe_0.5Cr_0.5O₃ composites absorbed 6.7 and 6.2 wt.% of hydrogen, respectively. X-ray powder diffraction after ball milling did not reveal any new compounds, except magnesium hydride. Thermal desorption from these composites occurs in two stages at temperatures above 300°C. The activation energy (E_a) of hydrogen desorption was determined by the Kissinger method. For the composite with TbFe_0.5Cr_0.5O₃, E_a is 123 kJ/mol, and for the composite with Dy_0.5Nd_0.5FeO₃ E_a = 147 kJ/mol. These composites were also tested as materials for hydrogen generation by hydrolysis in pure water and MgCl₂ water solutions. In pure water, the hydrogen yield during hydrolysis ranged from 320 to 350 ml per gram. The conversion degree was significantly improved by the addition of MgCl₂. It reached 90% (~1400 ml/g) after 30 min of hydrolysis for the MgH₂–nano-TbFe_0.5Cr_0.5O₃. These characteristics show that the synthesized MgH₂–nano-RTO₃ composites can be used in hydrogen generation systems.

采用反应球磨法添加复合氧化物RTO ₃ (R-稀土和T-过渡金属)纳米粒子作为催化剂和石墨合成了MgH _{2基复合材料。}所有复合材料均含有5wt.%的通过溶胶-凝胶法合成的复合氧化物Dy _0.5 Nd _0.5 FeO ₃和TbFe _0.5 Cr _0.5 O _{3 ，其中一些复合材料还含有3wt.%的石墨。}该氧化物具有斜方钙钛矿结构（GdFeO ₃型），平均粒径为 80–300 nm。证明了钙钛矿在研磨过程中对镁氢化的影响以及氢吸附-解吸动力学的改善。Mg-Dy _0.5 Nd _0.5 FeO ₃和Mg-TbFe _0.5 Cr _0.5 O ₃复合材料分别吸收了6.7 wt.%和6.2 wt.%的氢。球磨后的X射线粉末衍射没有发现除氢化镁之外的任何新化合物。这些复合材料的热解吸在温度高于 300°C 时分两个阶段发生。通过基辛格法测定氢解吸的活化能( E _{a )。对于TbFe 0.5} Cr _0.5 O ₃的复合材料，E _a为123 kJ/mol，对于Dy _0.5 Nd _0.5 FeO _{3 的复合材料，} E _a = 147 kJ/mol。还对这些复合材料作为在纯水和MgCl ₂水溶液中水解产生氢气的材料进行了测试。在纯水中，水解过程中的氢气产量为每克320至350毫升。_{MgCl 2}的加入显着提高了转化率。_{MgH 2} –纳米-TbFe _0.5 Cr _0.5 O ₃水解30分钟后达到90%（~1400 ml/g）。这些特性表明合成的MgH ₂ -nano-RTO ₃复合材料可用于制氢系统。