论文部分内容阅读
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 catalyst on the hydrogen evolution and dehydrogenation of NaBH4 was investigated. The results show that with the addition of Co2B / Nd2O3, the hydrogen evolution rate of doped NaBH4 samples significantly accelerated. When the amount of Co2B / Nd2O3 added is the same, with the increase of Nd2O3 content in the catalyst Co2B / Nd2O3, the hydrogen evolution rate of the doped sample decreases obviously. The study on the amount of hydrogen released showed that when the amount of Co2B / Nd2O3 added increases, the amount of hydrogen released from the sample increases, but the increase is small. In all the doped samples, the doping amount is 4% The maximum hydrogen release capacity of the sample containing 80% Co2B + 20% Nd2O3 was 520 mL / g. SEM analysis shows that with the increase of doping amount in NaBH4, the hydrogen evolution rate of the sample changes significantly, however, the amount of hydrogen released from the sample does not change significantly.