Hydrogen Permeation of ZnO-SiC Membranes Encapsulated with SiO2 |
Hyunji Choi, Hyeyoun Hwang, Miewon Jung |
School of Biological Sciences and Chemistry/Institute of Basic Science, Sungshin Women's University |
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ABSTRACT |
ZnO and SiC powders were fabricated to make crack-free composite membranes. Parts of some membranes were re-treated with an encapsulation process. These membranes were characterized by XRD, BET, and FE-SEM analyzes. The hydrogen permeation fluxes of the encapsulated and heat-treated membranes after encapsulation were observed using Sievert's type equipment. Values were measured at 1 bar with increasing temperatures. The obtained values of encapsulated and further heat-treated membrane at 298 K were $4.20{times}10^{-6}$ and $8.64{times}10^{-5}mol/m^2sPa$, respectively. |
Key words:
Composite membrane, Encapsulation process, Hydrogen permeation |
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