Alloy design of V-based hydrogen permeable membrane under given temperature and pressure condition
Alloy design of V-based hydrogen permeable membrane under given temperature and pressure condition
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DOI：
10.1016/j.ijhydene.2017.04.009
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发表时间：
2017-08
影响因子：
7.2
通讯作者：
Asuka Suzuki;H. Yukawa;T. Nambu;Y. Matsumoto;Y. Murata
中科院分区：
文献类型：
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作者：
Asuka Suzuki;H. Yukawa;T. Nambu;Y. Matsumoto;Y. Murata
对于氢渗透膜的合金设计，以适当的方式控制压力-成分-等温线（PCT曲线）以获得高氢渗透率和强抗氢脆性非常重要。基于这一概念，在一定温度下的一定压力条件下，考虑氢溶解的部分摩尔焓变Δ H 0.2 和熵变Δ S 0.2 设计了钒基合金膜。结果表明，考虑到 Δ H 0.2 和 Δ S 0.2，可以非常精确地控制 PCT 曲线。此外，还估计了获得 300 Nm 3 h− 1 氢气流量所需的膜面积。发现，考虑到膜面积，在进料侧施加至少400kPa的氢气压力是有利的。
For alloy design of hydrogen permeable membrane, it is important to control pressure–composition–isotherm (PCT curve) in an appropriate manner in order to obtain high hydrogen permeability with strong resistance to hydrogen embrittlement. Based on this concept, V-based alloy membranes are designed under some given pressure conditions at a temperature in view of the partial molar enthalpy change, Δ H¯ 0.2, and entropy change, Δ S¯ 0.2, of hydrogen for hydrogen dissolution. It is demonstrated that the PCT curve can be controlled very precisely in view of Δ H¯ 0.2 and Δ S¯ 0.2. Also, the required membrane area to obtain 300 Nm 3 h− 1 of hydrogen flow is estimated. It is found that, in view of the membrane area, it is favorable to apply at least 400 kPa of hydrogen pressure at feed side.