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- Title
High-rate hydrogen separation using an MIEC oxygen permeable membrane reactor.
- Authors
Li, Wenping; Cao, Zhongwei; Zhu, Xuefeng; Yang, Weishen
- Abstract
In this study, we propose using mixed ionic-electronic conducting (MIEC) oxygen permeable membrane to separate hydrogen via the water splitting reaction. To do that, steam was fed to one side of the membrane (side I) and a low-purity hydrogen was fed to the other side (side II). Oxygen from water splitting on side I permeates through the membrane driven by an oxygen chemical potential gradient across the membrane to react with the low-purity hydrogen on side II. After condensation and drying, high-purity hydrogen is acquired from side I. Thus, the hydrogen separation process is realized based on the fact that the low-purity hydrogen is consumed and high-purity hydrogen is acquired. We achieved a high hydrogen separation rate (13.5 mL cm−2 min−1) at 950°C in a reactor equipped with a 0.5-mm-thick Ba0.98Ce0.05Fe0.95O3-δ membrane. This research proofed that it is feasible to upgrade hydrogen purity using an MIEC oxygen permeable membrane. © 2016 American Institute of Chemical Engineers AIChE J, 63: 1278-1286, 2017
- Subjects
HYDROGEN; WATER electrolysis; STEAM; OXYGEN; CONDENSATION
- Publication
AIChE Journal, 2017, Vol 63, Issue 4, p1278
- ISSN
0001-1541
- Publication type
Article
- DOI
10.1002/aic.15502