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实验通过排水法研究了复合催化剂Co_2B/TiO_2对NaBH_4水解放氢性能的影响。研究结果显示,复合催化剂Co_2B/TiO_2配比以及加入量对NaBH_4的放氢量的影响不是很明显,当改变复合催化剂的加入量以及复合催化剂的配比时,NaBH_4的水解放氢量都介于343~375mL之间。然而,NaBH_4水解放氢速率的研究发现,复合催化剂Co_2B/TiO_2加入量以及复合催化剂配比对NaBH_4的水解放氢速率的影响非常大,当复合催化剂的加入量在1%~4%的变化区间时,掺杂复合催化剂的试样的放氢速率随着掺杂量的增加都呈现出了一个明显的增加趋势,在所有掺杂复合催化剂Co_2B/TiO_2的试样中,掺杂5%Co2B/2TiO2试样的放氢速率最大,达到了187.5mL/min。
The effect of Co_2B / TiO_2 on NaBH_4 hydrogen evolution and dehydrogenation performance was investigated by the drainage test. The results show that the effect of Co 2 B / TiO 2 ratio and amount on the amount of hydrogen released from NaBH 4 is not obvious. When the amount of composite catalyst and the ratio 343 ~ 375mL between. However, the study on the rate of hydrogen evolution and dehydrogenation of NaBH_4 shows that the effect of the amount of Co_2B / TiO_2 and the ratio of composite catalyst on the rate of hydrogenation and desorption of NaBH_4 is very large. When the amount of composite catalyst is in the range of 1% ~ 4% , The hydrogen evolution rate of the samples doped with composite catalysts showed a significant increase trend with the increase of the doping amount. In all samples doped with composite catalysts Co_2B / TiO_2, 5% Co2B / The discharge rate of 2TiO2 sample is the largest, reaching 187.5mL / min.