催化剂Co_2B/Nd_2O_3对NaBH_4水解放氢的影响

Effect of Catalyst Co_2B/Nd_2O_3 on Hydrogen Generation of NaBH_4 Hydrolysis

研究了催化剂Co2B/Nd2O3对NaBH4水解放氢性能的影响。结果显示,随着Co2B/Nd2O3加入量的增加,掺杂NaBH4试样的放氢速率明显加快。当Co2B/Nd2O3的加入量相同时,随着催化剂Co2B/Nd2O3中Nd2O3含量的增加,掺杂试样的放氢速率明显降低。对于放氢量的研究发现,当Co2B/Nd2O3加入量增加时,试样的放氢量有所增加,但是增加幅度不大,在所有的掺杂试样中,掺杂量为4%的掺杂80%Co2B+20%Nd2O3的试样的放氢量最大为520 mL/g。SEM的分析发现,随着NaBH4中掺杂量的增加,试样的放氢速率变化明显,然而试样的放氢量却没有明显变化。

The effect of Co2B/Nd2O3 on hydrogen generation by hydrolysis of Na BH4 was studied. The results indicate that the hydrogen release rate of doped Na BH4 is accelerated markedly when the amount of Co2B/Nd2O3 is increased. While, increasing the proportioning of Nd2O3 within Co2B/Nd2O3, the hydrogen release rate of the doped samples is decreased significantly. The hydrogen release amount of the doped sample increases slightly with the increase of Co2B/Nd2O3. Among all samples, the hydrogen release amount of 4% 80%Co2B＋20%Nd2O3-doped Na BH4 is the largest, 520 m L/g. With the increase of Co2B/Nd2O3 amount, the hydrogen release rate of samples shows an obvious change; however, the hydrogen release amount of samples does not change evidently.