多孔基体负载型钯膜制备质量控制和缺陷修补的研究进展

Research progress of fabrication quality control and defects repairing of palladium membranes supported on porous substrate

钯膜对氢气有着优异的渗透性和选择性,在氢分离和膜催化反应领域备受关注。将钯膜直接沉积于多孔基体表面形成的钯复合膜,具有厚度薄、力学强度高、氢渗透率高、成本低等优点,但制膜难度较高。在各种制膜方法中,化学镀法最为常用。在化学镀制膜过程中,对钯膜的质量控制和缺陷修补工艺进行了综述,以期进一步推动高性能钯复合膜的发展及应用。

Owing to the excellent permeability and permselectivity toward hydrogen, palladium membranes have attracted much attention in the fields of hydrogen separation and membrane catalytic reaction. Palladium membranes supported on porous substrate（i.e., composite palladium membranes） have many advantages, such as thin membrane thickness, robust mechanical strength, high H2-permeance and low cost, but the membrane preparation is challenging. Among various preparation methods, electroless plating is the most popular. Based on such process, the membrane quality control and defects repairing are summarized to push forward the development and application of composite palladium membranes.