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通过PCT(pressure-content-temperature)研究了催化剂对LiAlH_4放氢性能的影响规律。实验选用的催化剂为纳米Ni粉和纳米Co粉,研究结果显示,催化剂Ni和Co对LiAlH_4试样的放氢温度几乎没有改善,但是可以有效地改善LiAlH_4试样的放氢量与放氢速率。在所有的掺杂Ni粉的试样中,掺杂5%Ni粉的试样的放氢量最大,而掺杂12%Ni粉的LiAlH_4试样的放氢速率最快;在掺杂Co粉的试样中,掺杂12%Co粉的试样的放氢量、放氢速率最大。
The effect of the catalyst on the hydrogen evolution performance of LiAlH 4 was studied by PCT (pressure-content-temperature). The results show that Ni and Co catalysts have little effect on the temperature of hydrogen desorption of LiAlH_4, but can effectively improve the hydrogen desorption rate and hydrogen evolution rate of LiAlH_4 sample. In all samples doped with Ni powder, the sample with 5% Ni powder dominates the hydrogen release rate, while the LiAlH_4 sample doped with 12% Ni powder has the fastest hydrogen release rate. When doped with Co powder Of the sample, doped with 12% Co sample of the hydrogen release amount, the maximum hydrogen release rate.