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

该研究旨在开发用于高温氢分离应用的薄Pd基复合膜。本研究的短期目标是：（1）寻找既具有适当的氢渗透性又具有良好的热稳定性的Pd基合金;（2）开发在合适的基底上沉积有前景的合金以形成薄的无针孔Pd基复合膜的技术;（3）研究杂质对这些薄的合金复合膜的氢渗透性能的影响。长期目标是：（1）开发在高温（500- 650 ℃）下具有适当稳定性的薄Pd基合金复合膜和（2）按比例放大用于制备这些复合膜的技术，使得它们具有足够的面积以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.