Microchannel structure of ceramic membranes for oxygen separation
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Microchanneled ceramic membranes have demonstrated superior performance in oxygen separation from air over conventional membranes. In this study, the contributions of the microchannel structure to the superior performance were investigated. Compared with supported membranes, the microchanneled membranes provide fast pathways within the channels for gas diffusion as compared to the tortuous interconnection of pore channels in the supported membranes. The walls of the numerous channels provide a large surface for facilitating oxygen dissociation, which was confirmed by varying the channel wall surface using mesh templates with different aperture sizes. In summary, the microchannel structure facilitates gas diffusion and provides a large membrane active surface, resulting in high performance in oxygen separation.
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Shao, X.; Dong, Dehua; Parkinson, G.; Li, C. (2017)© 2017 Elsevier B.V. A novel dendritic microchanneled membrane has been prepared using a mesh-guided phase inversion process. A mesh-guided phase inversion mechanism is proposed to explain the formation mechanism of the ...
Shao, Xin; Dong, Dehua; Parkinson, Alan; Li, Chun-Zhu (2014)Microchanneled membranes have demonstrated high oxygen permeation fluxes owing to the shortened oxygen permeation distance and the enlarged membrane surface area. In this study, further improvement of the oxygen permeation ...
Shao, Xin; Dong, Dehua; Parkinson, Gordon; Li, Chun-Zhu (2014)Microchanneled ceramic membranes have been prepared by a templated phase-inversion process, and the effects of coagulant and slurry properties on the microchannel structure were investigated in order to control membrane ...