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Novel cobalt-free oxygen permeable membrane
Xuefeng Zhu1, Haihui Wang, Weishen Yang
1State Key Laboratory of Catalysis, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, P. O. Box 110, Dalian 116023, China.
Chemical Communications (Cambridge, England)
|April 30, 2004
Summary
New perovskite membranes offer a low-cost, cobalt-free solution for efficient oxygen separation. These BaCe(x)Fe(1-x)O(3-delta) (BCF) membranes exhibit high stability and permeability, ideal for hydrocarbon conversion reactors.
Area of Science:
- Materials Science
- Chemical Engineering
- Catalysis
Background:
- Perovskite oxides are promising materials for oxygen separation membranes.
- Developing cobalt-free and cost-effective alternatives is crucial for industrial applications.
- Selective oxidation of hydrocarbons requires efficient and stable membrane reactors.
Purpose of the Study:
- To synthesize and characterize novel cobalt-free perovskite membranes.
- To evaluate the oxygen permeability and stability of these membranes under reductive conditions.
- To assess the suitability of these membranes for hydrocarbon conversion into syngas or oxygenates.
Main Methods:
- Synthesis of BaCe(x)Fe(1-x)O(3-delta) (BCF) perovskite oxides.
- Characterization of membrane structure and properties.
- Testing of oxygen permeability and long-term stability in a reductive atmosphere.
Main Results:
- Successfully synthesized a series of cobalt-free BCF perovskite membranes.
- Demonstrated high oxygen permeability and excellent stability under reductive atmosphere.
- Identified optimal compositions for membrane reactor applications.
Conclusions:
- The developed BCF perovskite membranes are cost-effective and cobalt-free.
- These membranes show high performance and stability, suitable for membrane reactors.
- Potential for selective oxidation of light hydrocarbons to valuable products like syngas.