Abstract
Mixed ionic-electronic conducting membranes have seen significant progress over the last 25 years as efficient ways to obtain oxygen separation from air and for their integration in chemical production systems where pure oxygen in small amounts is needed. Perovskite materials are the most employed materials for membrane preparation. However, they have poor phase stability and are prone to poisoning when subjected to CO 2 and SO 2 , which limits their industrial application. To solve this, the so-called dual-phase membranes are attracting greater attention. In this review, recent advances on self-supported and supported oxygen membranes and factors that affect the oxygen permeation and membrane stability are presented. Possible ways for further improvements that can be pursued to increase the oxygen permeation rate are also indicated. Lastly, an overview of the most relevant examples of membrane reactors in which oxygen membranes have been integrated are provided.
| Original language | English |
|---|---|
| Article number | 128 |
| Number of pages | 50 |
| Journal | Processes |
| Volume | 7 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 1 Mar 2019 |
Funding
This project has received funding from the European Union's Horizon 2020 research and innovation programme under grant agreement No 679933. The present publication reflects only the author's views and the European Union is not liable for any use that may be made of the information contained therein.
Keywords
- Fluorite
- Membrane
- Membrane reactor
- MIEC
- Oxygen separation
- Perovskite