Study on the thermal decomposition of NaBH4 catalyzed by ZrCl4
Study on the thermal decomposition of NaBH4 catalyzed by ZrCl4
复制标题
DOI：
10.1016/j.ijhydene.2017.02.060
复制
发表时间：
2017-08
影响因子：
7.2
通讯作者：
Sanjay Kumar;A. Jain;H. Miyaoka;T. Ichikawa;Y. Kojima
中科院分区：
文献类型：
--
作者：
Sanjay Kumar;A. Jain;H. Miyaoka;T. Ichikawa;Y. Kojima
研究了四氯化锆(ZrCl4)对NaBH4热脱氢反应的催化作用。 ZrCl4被还原为ZrCl2和金属锆，在热脱氢过程中表现出高催化活性。在催化剂存在下，与纯 NaBH4 相比，NaBH4 脱氢反应的活化能显着降低至 180 kJ/mol，在类似的实验条件下，纯 NaBH4 的活化能为 275 kJ/mol。活化能的降低导致脱氢起始温度降低（<300°C）。在催化样品脱氢结束时残留有大量的钠。催化 NaBH4 的低温脱氢可用于控制钠金属的蒸发。
The catalytic effect of zirconium tetrachloride (ZrCl4) on the thermal dehydrogenation of NaBH4has been studied. The ZrCl4reduced to ZrCl2and metallic zirconium which exhibit the high catalytic activity during thermal dehydrogenation. The activation energy corresponding to dehydrogenation of NaBH4is remarkably reduced to 180 kJ/mol in the presence of a catalyst as compared to pure-NaBH4which was found to be 275 kJ/mol under the similar experimental conditions. The reduced activation energy leads to decreased onset dehydrogenation temperature (<300 °C). A substantial amount of sodium remained at the end of the dehydrogenation of catalyzed sample. The low-temperature dehydrogenation of catalyzed NaBH4could be useful to manage the evaporation of sodium metal.