钯膜制备及渗氢性能研究

随着膜分离技术的不断发展,渗氢用钯基膜由于具有优异的透氢速率、透氢选择性及良好的化学和热稳定性,已被广泛应用于氢提纯分离领域。介绍了钯透氢膜的种类、透氢机理和制备方法,总结了钯膜从最初的纯钯膜、钯合金膜到钯复合膜的发展历程和氢渗透性能研究,并重点介绍了以铌钯复合膜为代表的新型Pd/bcc型复合膜氢渗透性能的研究进展。

Fabrication and Hydrogen Permeability of Palladium Membranes

With the continuous development of membrane separation technology,palladium membranes for hy-drogen permeation have been widely used for hydrogen purification and separation due to their excellent permeability, hydrogen selectivity,as well as chemical and thermal stabilities.The types of palladium membranes,permeation mechanism of hydrogen,and their fabrication methods are reviewed.The development and hydrogen permeation per-formance of palladium membranes are summarized from the initial pure palladium membranes to the palladium alloy membranes and palladium composite membranes.As a representative of new Pd/bcc composite membranes,the nio-bium and palladium composite membrane is mainly introduced.