金属及金属盐改性NaAlH_4的放氢反应研究

Study on metals and metal salts modified the hydrogen reaction of NaAlH_4

采用加入金属及金属盐的方法对NaAlH4进行催化放氢作用的研究。实验证明,加入钼粉、氧化钇、氯化铋,NaAlH4脱氢反应性能明显提高,2%(wt,下同)Mo、2%Y2O3和2%BiCl3的加入对NaAlH4的放氢过程产生了较大的影响,改进了其放氢动力学性能,使NaAlH4的放氢量提高1.0%以上。

The method of joining metals and metal salts on NaA1H4 and its catalytic role of hydrogen release were studied, The experimental results showed that adding molybdenum powder, yttrium oxide and bismuth chloride, NaA1H4 dehydrogenation performance was improved significantly. The addition of 2wt% Mo, 2wt% Y203 and 2wt%BiCl3 had a greater impact on the process of hydrogen release of the NaA1H4, improved dynamic performance of its hydrogen release, made the amount of hydrogen increase to 1.0wt% or more.