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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Permeation of hydrogen through pre-oxidized Pd membranes in the presence and absence of CO
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Permeation of hydrogen through pre-oxidized Pd membranes in the presence and absence of CO

机译：在存在和不存在CO的情况下，氢气通过预氧化的Pd膜渗透

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The main results of this investigation are: (a) Pd membranes activated by oxidization at 953 K have greater permeabilities than those oxidized in situ at approx 523 K; the latter is in a commonly employed temperature range for activation/oxidation of Pd membranes, (b) it is shown quantitatively that the non-ideality of H dissolved in Pd accounts for the deviations of the permeabilities at higher pressures from a direct dependence on p_(H_2)~(1/2), (c) the diffusion constants of H in Pd at infinite dilution obtained here agree well with those in the literature, (d) Pd membranes prepared by oxidization at 953 K are more resistant to CO poisoning than those oxidized in situ at 523 K, (e) the permeability of a Pd membrane (oxidation at 953 K) decreases over a 60 min period in the presence but not in the absence of CO, and (f) the CO poisoning increases as the temperature decreases.
机译：这项研究的主要结果是：（a）在953 K氧化作用下活化的Pd膜的渗透性大于在523 K氧化作用下原位氧化的膜。后者处于Pd膜活化/氧化的常用温度范围内。（b）定量显示，溶解在Pd中的H的非理想性解释了较高压力下的渗透率与直接依赖于p_的偏差。 （H_2）〜（1/2），（c）在无限稀释下H在Pd中的扩散常数与文献中的一致，（d）在953 K氧化制得的Pd膜更耐CO中毒与在523 K时原位氧化的相比，（e）在存在但不存在CO的情况下，60分钟内Pd膜的渗透性（在953 K处的氧化）降低，（f）随着温度下降。

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