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采用直流电弧等离子体加高压氢化法制备了纳米镁基储氢材料Mg-H和MgEr-H,并对其相组成和放氢性能进行了表征,结果表明添加稀土元素Er可使Mg粉的吸氢更完全,同时使MgH2的放氢温度降低。采用同步热分析方法(TG/DSC)分析了镁基储氢材料对高氯酸铵(AP)热分解性能的影响,结果表明两种镁基储氢材料都能有效促进AP的低温和高温分解过程,尤其是高温分解峰温下降了约80℃,并且使得表观放热量大幅增加,可达纯AP放热量的2倍多,反应过程更为剧烈。添加稀土的镁基储氢材料对AP分解的催化效果更好。
The Mg-H and MgEr-H nano-Mg based hydrogen storage materials were prepared by DC arc plasma plus high pressure hydrogenation. The phase composition and hydrogen desorption performance were characterized. The results show that the addition of rare earth element Er can make the absorption of Mg powder Hydrogen is more complete and at the same time, the hydrogen evolution temperature of MgH2 is reduced. The effect of Mg-based hydrogen storage materials on the thermal decomposition of ammonium perchlorate (AP) was analyzed by simultaneous thermal analysis (TG / DSC). The results show that both Mg-based hydrogen storage materials can effectively promote the low and high temperature decomposition of AP The process, especially pyrolysis peak temperature decreased about 80 ℃, and makes a substantial increase in apparent heat release, up to 2 times more pure AP heat release, the reaction process is more intense. The addition of rare earth magnesium-based hydrogen storage material to catalyze the decomposition of AP is better.