Hydrogen-capturing membranes under standard atmospheric conditions have been prepared based on polyurethane (PUR) nanofibers modified by using Pd nanoparticles. Hydrogen sorption capacity achieved at room temperature and a pressure of 1 bar is 207.7 ml g⁻¹ (1.9 wt%) and at 4 bar, it is 1173.3 ml g⁻¹ (10.6 wt%), measured by the standard Pressure Decay (PD) method. An original method, the dynamic Gas Chromatography (dGC) method, has been developed for H₂ sorption tests simulating conditions in a gas mixture stream. The comparison of both types of sorption tests is useful for practical use in selectively capturing H₂ under real conditions. Desorption tests performed by the dGC method confirmed the reasonable stability of the content of captured hydrogen in the membrane at room temperature and normal atmospheric pressure. The membrane is self-supporting and air-permeable, allowing easy design of the functional unit.

中文翻译：

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静电纺丝技术制备吸氢PUR/Pd纳米复合纳米纤维膜


基于Pd纳米粒子改性的聚氨酯（PUR）纳米纤维制备了标准大气条件下的氢捕获膜。在室温和 1 bar 压力下实现的氢吸附容量为 207.7 ml g ^-1 (1.9 wt%)，在 4 bar 下实现的氢吸附容量为 1173.3 ml g ^-1 (10.6 wt%)，通过标准压力衰减 (PD) 测量） 方法。动态气相色谱 (dGC) 方法是一种原创方法，已开发用于模拟气体混合物流中的条件进行 H ₂吸附测试。两种类型的吸附测试的比较对于在实际条件下选择性捕获H _{2 的}实际应用是有用的。通过dGC方法进行的解吸测试证实了膜中捕获的氢含量在室温和常压下的合理稳定性。该膜具有自支撑性和透气性，可以轻松设计功能单元。