Preparation of Thin Palladium Composite Membranes and Application to Hydrogen/Nitrogen Separation  

作　　者：张科 高会元 芮泽宝 林跃生 李永丹 

机构地区：[1]Department of Catalysis Science and Technology, School of Chemical Engineering, Tianjin University, Tianjin 300072, China [2]Department of Chemical and Materials Engineering, Arizona State University, Tempe, AZ 85287-1066, USA [3]Department of Applied Chemistry, School of Chemical Engineering and Biological Technology, Hebei Polytechnic University, Tangshan 063009, China

出　　处：《Chinese Journal of Chemical Engineering》2007年第5期643-647,共5页中国化学工程学报（英文版）

基　　金：Supported by the National Natural Science Foundation of China （No.20425619）.

摘　　要：Thin palladium composite membranes were prepared by modified electroless plating method on a-alumina supports and a dense Pd/α-Al2O3 composite membrane with high hydrogen flux, good selectivity for hydrogen was obtained. It was tested in a single gas permeation system for hydrogen permeance and hydrogen selectivity over mtrogen. The hydrogen permeance of the corresponding membrane was ashigh as 2.45×10^-6mol·m^-2·s^-1.Pa^-1 and H2/N2 selectivityover700 at 623K and a pressure difference of 0.1MPa. The-main resistance of the composite membrane to H2 permeation lies in the aluminum ceramic support rather than the thin Pd layer.薄钯合成的膜被修改无电的 plating 方法与高氢流动在氧化铝支持和稠密的 Pd/-Al2O3 合成的膜上准备，为氢的好选择被获得。它在氮上为氢渗入和氢选择在一个单个煤气的浸透系统被测试。相应的膜的氢渗入象 2.45 ×一样高 10 ? 6mol · m ? 2 · s ? 1 · Pa ? 1 并且在 623K 和 0.1MPa 的压力差别的超过 700 的 H2/N2 选择。到 H2 浸透的合成的膜的主要抵抗躺在铝陶器的支持而非薄 Pd 层。

关 键 词：palladium membrane non-electrical plating hydrogen separation 

分 类 号：O643.1[理学—物理化学]