Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9610397 | Catalysis Today | 2005 | 6 Pages |
Abstract
The single gas H2 and N2 permeability of a 4 μm thick dense fcc-Pd66Cu34 layer has been studied between room temperature and 510 °C and at pressure differences up to 400 kPa. Above 50 °C the H2 flux exhibits an Arrhenius-type temperature dependence with JH2=(5.2±0.3) mol mâ2 sâ1 exp[(â21.3 ± 0.2) kJ molâ1/(R·T)]. The hydrogen transport rate is controlled by the bulk diffusion although the pressure dependence of the H2 flux deviates slightly from Sieverts' law. A sudden increase of the H2 flux below 50 °C is attributed to embrittlement.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Xiulian Pan, Mirjam Kilgus, Andreas Goldbach,