Characterization of ceramic hydrogen separation membranes with varying nickel concentrations

被引：25

作者：

Siriwardane, RV

Poston, JA

Fisher, EP

Lee, TH

Dorris, SE

Balachandran, U

机构：

[1] US Dept Energy, Natl Energy Technol Lab, Morgantown, WV 26507 USA

[2] Argonne Natl Lab, Div Energy Technol, Argonne, IL 60439 USA

来源：

APPLIED SURFACE SCIENCE | 2000年 / 167卷 / 1-2期

关键词：

high temperature membranes; hydrogen separation membranes; ceramic membranes; surface characterization of membranes;

D O I：

10.1016/S0169-4332(00)00493-1

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Ceramic hydrogen separation membranes in the stoichiometric form BaCe0.8Y0.2O3, doped with various concentrations of nickel, were characterized by utilizing X-ray photoelectron spectroscopy (XPS), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and atomic-force microscopy (AFM). Characterization was performed at room temperature, 550 degrees C and 650 degrees C, and after exposure to hydrogen. Migration of nickel to the surface and changes in both elemental composition and oxidation states were observed at elevated temperatures. The concentration of nickel significantly affects surface morphology and roughness. (C) 2000 Published by Elsevier Science B.V.

引用

页码：34 / 50

页数：17

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