Hydrogen Purification through a Highly Stable Dual-Phase Oxygen-Permeable Membrane
- authored by
- Lujian Jia, Guanghu He, Yan Zhang, Jürgen Caro, Heqing Jiang
- Abstract
Using oxygen permeable membranes (OPMs) to upgrade low-purity hydrogen is a promising concept for high-purity H2 production. At high temperatures, water dissociates into hydrogen and oxygen. The oxygen permeates through OPM and oxidizes hydrogen in a waste stream on the other side of the membrane. Pure hydrogen can be obtained on the water-splitting side after condensation. However, the existing Co- and Fe-based OPMs are chemically instable as a result of the over-reduction of Co and Fe ions under reducing atmospheres. Herein, a dual-phase membrane Ce0.9Pr0.1O2−δ-Pr0.1Sr0.9Mg0.1Ti0.9O3−δ (CPO-PSM-Ti) with excellent chemical stability and mixed oxygen ionic-electronic conductivity under reducing atmospheres was developed for H2 purification. An acceptable H2 production rate of 0.52 mL min−1 cm−2 is achieved at 940 °C. No obvious degradation during 180 h of operation indicates the robust stability of CPO-PSM-Ti membrane. The proven mixed conductivity and excellent stability of CPO-PSM-Ti give prospective advantages over existing OPMs for upgrading low-purity hydrogen.
- Organisation(s)
-
Institute of Physical Chemistry and Electrochemistry
- External Organisation(s)
-
Qingdao Institute Of Bioenergy & Bioprocess Technology Chinese Academy Of Sciences
University of the Chinese Academy of Sciences (UCAS)
- Type
- Article
- Journal
- Angewandte Chemie - International Edition
- Volume
- 60
- Pages
- 5204-5208
- No. of pages
- 5
- ISSN
- 1433-7851
- Publication date
- 22.02.2021
- Publication status
- Published
- Peer reviewed
- Yes
- ASJC Scopus subject areas
- Catalysis, General Chemistry
- Sustainable Development Goals
- SDG 7 - Affordable and Clean Energy
- Electronic version(s)
-
https://doi.org/10.1002/anie.202010184 (Access:
Open)
