Surface segregation of PdAg membranes upon hydrogen permeation
✍ Scribed by J. Shu; B.E.W. Bongondo; B.P.A. Grandjean; A. Adnot; S. Kaliaguine
- Publisher
- Elsevier Science
- Year
- 1993
- Weight
- 77 KB
- Volume
- 291
- Category
- Article
- ISSN
- 0167-2584
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Hydrogen permeation experiments were performed to evaluate the influence of water vapor on hydrogen permeability in 80e20% by weight PdeAg membranes of 2.5 mm thickness. In particular, hydrogen flux was measured in pure hydrogen permeation tests as well as in experiments with binary mixtures contain
Changes in hydrogen permeability and surface state of a Pd-Ag/ceramic membrane have been investigated as a function of thermal treatment. The surface state is determined by X-ray photoelectron spectroscopy (XPS). The XPS data show a significant enrichment of the Ag alloying element and an accumulati