What is it about?
The multiple types of efficient oxygen transport paths were demonstrated in high‐mechanical‐strength hepta‐bore Ba0.5Sr0.5Co0.8Fe0.2O3‐δ hollow fiber membranes. These types of paths play a prominent role in enhancing oxygen permeation fluxes (17.6 mL min−1 cm−2 at 1223 K) which greatly transcend the performance of state‐of‐the‐art Ba0.5Sr0.5Co0.8Fe0.2O3‐δ hollow fiber membranes, showing a good commercialization prospect.
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Why is it important?
For pure oxygen production applied in oxyfuel process, how to highly improve the performance of perovskite HF membranes easily, cheaply, and reliably? Here, to address these critical issues, rather than using traditional routes (e.g., developing thin low-mechanical-strength HF membranes with only one type of oxygen transport paths, or modifying these HF membranes surfaces), we demonstrate a new route for enhancing oxygen permeation via multiple types of efficient oxygen transport paths in high-mechanical-strength hepta-bore BSCF HF membranes.
Perspectives
we have successfully demonstrated that these actual multiple types of efficient oxygen transport paths in hepta-bore perovskite HF membranes (with excellent mechanical strength) play a prominent role in significantly enhancing oxygen permeation performance. At elevated temperatures, the as-prepared hepta-bore BSCF HF membranes feature extraordinary performance for oxygen permeation, which greatly transcends the performance of state-of-the-art BSCF HF membranes and clearly exceeds the coveted goal of commercialization, offering great potential for practical oxygen production. These novel findings could also potentially open the door to exploring high-performance oxygen-permeable membranes for application in energy and environmental fields.
Jiawei Zhu
Nanjing Tech University
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This page is a summary of: Enhancing oxygen permeation via multiple types of oxygen transport paths in hepta-bore perovskite hollow fibers, AIChE Journal, July 2017, Wiley,
DOI: 10.1002/aic.15849.
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