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題 名 | Studies on the Preparation of Pd/Alumina/Porous Stainless Steel Membranes for Hydrogen Separation=Pd/Al[feaf]O[feb0]/PDS氫氣分離膜之製程研究 |
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作 者 | 周更生; 王勝民; | 書刊名 | Journal of the Chinese Institute of Chemical Engineers |
卷 期 | 31:5 2000.09[民89.09] |
頁 次 | 頁499-506 |
分類號 | 472.16 |
關鍵詞 | Pd/Al[feaf]O[feb0]/PDS氫氣分離膜; Pd membrane; Hydrogen separation; Electroless plating; Porous stainless steel; |
語 文 | 英文(English) |
中文摘要 | 本研究旨在探討製備圓管支撐式鈀金屬氫氣分離膜。整個製程採二階段步驟,首先將市售之多孔不鏽鋼管之外部,經過拋光以及塗覆氧化鋁層加以平坦化,減小圓管的平均孔洞,一使原先凹凸不平的表面改善,另外一方面亦期待此氧化鋁層具有擴散障礙的功能,防止金屬鈀與不鏽鋼之間的擴散。第二階段為在改質的基材表面使用無電電鍍程序鍍上一層鈀金屬薄膜。研究結果顯示,經過前處理程序改質後,多孔不鏽鋼圓管(管長5 cm 外徑0.95 cm)基材,其孔洞由原先之17μm縮減至約1.5μm,然後再經過4次的無電電鍍程序,可得一緻密之鈀膜,而其在350℃下進行氫氣滲透反應,透選率為 110 (H₂/N₂),氫氣穿透率為2.2×10^-7 mol/m²-s-Pa。 |
英文摘要 | The focus of this article is to study preparation procedures used to make supported palladium (Pd) membranes for hydrogen separation. We first modified the outside surface of a commercial porous stainless steel (PSS) tube by polishing and coating with a thin layer of alumina. This alumina layer serves to flatten the surface and also to act as a diffusion barrier between the Pd and PSS substrate. After modification, the Pd layer is then deposited using an electroless plating technique. Permeation analysis results indicate that the average pore size decreases from the original 17μm to about 1.5μm after modification. A dense Pd film can be obtained after only four times of electroless deposition. The selectivity of this Pd/Al₂O₃/PSS tube (length 5 cm, outside diameter 0.95 cm) is 110 for H₂/N₂, and the hydrogen permeance is 2.2×10^-7 mol/m²-s-Pa at 350℃ under a transmembrane pressure difference of 1.0×10^5 Pa. |
本系統中英文摘要資訊取自各篇刊載內容。