%0 Journal Article
%A Nooijer, Niek
%A Arratibel Plazaola, Alba
%A Meléndez Rey, Jon
%A Fernandez, Ekain
%A Pacheco Tanaka, David
%A Sint Annaland, Martin
%A Gallucci, Fausto
%T Long-Term Stability of Thin-Film Pd-Based Supported Membranes
%D 2019
%@ 2227-9717
%X 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.
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