透氢非钯基金属膜研究进展

Progress in Non-Palladium-Based Metallic Membranes for Hydrogen Permeation

摘要:

相比于变压吸附和深冷分离法，膜分离技术由于能耗低、简单易行等特点，在氢气分离提纯中的应用具有优势。目前工业上分离提纯氢气应用最多的是致密金属膜，尤其是钯及其合金膜。但是钯是贵金属，成本非常高，限制了钯基膜的大规模应用。因此目前非钯基致密金属膜在氢气分离提纯中的应用受到广泛的的关注，成为研究热点。本文综述了金属膜分离氢气机理，非钯基金属膜的材料成分及其发展现状，并指出目前开发膜材料存在的一些亟待解决的问题。

Abstract:

Compared to pressure swing adsorption (PSA) and cryogenic separation methods, a membrane separation technique has superiority in simplicity and potentially less energy intensity for hydrogen separation and purification. To date, high purity of hydrogen is obtainable through dense metallic membranes, especially palladium and its alloys in industry. However, Pd-based alloy membranes are very expensive in large-scale industrial application. The application of non-palladium-based dense metallic separation membranes is currently receiving great attention. The mechanism of hydrogen separation, composition and current progress of non-palladium-based metallic membranes were reviewed, and the existing problems were identified.