Abstract
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.
| Original language | English |
|---|---|
| Article number | 106 |
| Pages (from-to) | 106 |
| Number of pages | 1 |
| Journal | Processes |
| Volume | 7 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - 1 Feb 2019 |
Keywords
- Palladium based membranes
- Membrane stability
- Membrane reactors
- Fluidized bed
- Hydrogen production
Project and Funding Information
- Project ID
- info:eu-repo/grantAgreement/EC/H2020/671459/EU/BIOgas membrane reformer for deceNtralIzed hydrogen produCtiOn/BIONICO
- Funding Info
- The presented work is funded within BIONICO. This project has received funding from the Fuel Cells_x000D_ and Hydrogen 2 Joint Undertaking under grant agreement No 671459. This Joint Undertaking receives support_x000D_ from the European Union’s Horizon 2020 Research and Innovation Programme, Hydrogen Europe and N.ERGHY.