Development of thin Pd-based composite membrane suitable for hydrogen separation at high temparature

这项研究的目的是开发用于高温氢分离的Pd基薄复合膜。本研究的短期目标是：(1)寻找具有合适的透氢性和良好热稳定性的Pd基合金；(2)开发在合适的衬底上沉积有前途的合金以形成无针孔的Pd基薄复合膜的技术；(3)研究杂质对这些薄合金复合膜氢渗透性能的影响。长期目标是：(1)开发在高温(500-650℃)下具有适当稳定性的Pd基合金复合膜；(2)扩大复合膜的制备技术，使其具有足够的面积，适合于实际工业应用。

The proposed research is to develop thin Pd-based composite membranes for hydrogen separation applications at high temperatures. The short term objectives of this research are to: (1) seek Pd-based alloys possessing both appropriate hydrogen permeability and good thermal stability, (2) develop techniques for depositing promising alloys on suitable substrates to form thin pinhole-free Pd-based composite membrane, and (3) study impacts of impurities on hydrogen permeation performance of these thin alloy composite membranes. The long term objectives are to: (1) develop thin Pd-based alloy composite membranes with appropriate stability at high temperatures (500-650C) and (2) scale-up the techniques for preparing these composite membranes so that they have sufficient area to be suitable for practical industrial applications.