| Autor: |
Nooijer, Niek de, Arratibel Plazaola, Alba, Meléndez Rey, Jon, Fernandez, Ekain, Pacheco Tanaka, David Alfredo, Sint Annaland, Martin van, Gallucci, Fausto |
| Předmět: |
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| Zdroj: |
Processes; Feb2019, Vol. 7 Issue 2, p106-1, 1p |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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