期刊
ACS APPLIED NANO MATERIALS
卷 1, 期 8, 页码 3774-3778出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsanm.8b00990
关键词
oxygen transport membrane; dual-phase membrane; chemical reactor; freeze-drying tape-casting; bilayer structure
资金
- Natural Science Foundation of China [51502207, 51602228]
- Natural Science Foundation of Jiangsu Province of China [BK20160380]
- Natural Science Foundation of Hubei Province of China [2016CFB243, 2017CFB655]
- China Postdoctoral Science Foundation [20161\4590712, 2017T100575]
A bilayer Zr0.84Y0.16O1.92-La0.8Sr0.2Cr0.5Fe0.5O3-delta (YSZ-LSCrF) dual-phase membrane with a hierarchical structure is successfully prepared for membrane reactor application by the freeze-drying tape-casting method. The oxygen permeation flux of the membrane is extremely enhanced from 0.001 32 to 0.0165 mol m(-2) s(-1) at 950 degrees C under an air/CO gradient, which is attributed to the effectively decreased gas diffusion resistance in the support as well as the significantly lowered oxygen ion diffusion resistance in the functional layer. The superior oxygen permeability and stability enable the bilayer YSZ-LSCrF oxygen transport membrane to be a suitable candidate for membrane reactor applications.
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