TY  - Journal Article
AU  - Nooijer, Niek
AU  - Arratibel Plazaola, Alba
AU  - Meléndez Rey, Jon
AU  - Fernandez, Ekain
AU  - Pacheco Tanaka, David
AU  - Sint Annaland, Martin
AU  - Gallucci, Fausto
TI  - Long-Term Stability of Thin-Film Pd-Based Supported Membranes
PY  - 2019
PB  - MDPI AG
AB  - Membrane reactors have demonstrated a large potential for the production of hydrogen via reforming of different feedstocks in comparison with other reactor types. However, the long-term performance and stability of the applied membranes are extremely important for the possible industrial exploitation of these reactors. This study investigates the long-term stability of thin-film Pd-Ag membranes supported on porous Al2O3 supports. The stability of five similarly prepared membranes have been investigated for 2650 h, up to 600 °C and in fluidized bed conditions. Results show the importance and the contribution of the sealing of the membranes at temperatures up to 500 °C. At higher temperatures the membranes surface deformation results in pinhole formation and a consequent decrease in selectivity. Stable operation of the membranes in a fluidized bed is observed up to 450 °C, however, at higher temperatures the scouring action of the particles under fluidization causes significant deformation of the palladium surface resulting in a decreased selectivity.
UR  - http://hdl.handle.net/11556/700
DX  - 10.3390/pr7020106
ER  -