| Properties of Synthesized Al2O3-CuO-ZnO/Ni Composite for Hydrogen Membranes |
| Saetbyol Rim, Miewon Jung |
| School of Biological Sciences and Chemistry/Institute of Basic Science, Sungshin Women's University |
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| ABSTRACT |
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An $Al_2O_3$-CuO-ZnO (ACZ) precursor powder was synthesized by a facial sol-gel process using a nonionic surfactant span 80 as the chelating agent to improve the surface area and morphology. When creating a hydrogen membrane, several kinds of properties are required, such as easy dissociation of hydrogen molecules, fast hydrogen diffusion, high hydrogen solubility, and resistance to hydrogen embrittlement. ACZ-Ni composite membranes (cermet) were prepared with this precursor and pure Ni powder via the hot press sintering (HPS) method. The ACZ powder was characterized by XRD, BET, and FE-SEM. Hydrogen permeation experiments were performed by Sievert's type of hydrogen permeation membrane equipment. The hydrogen permeability of ACZ/Ni 10 wt% and ACZ/Ni 20 wt% was obtained as 7.2 and $10molm^{-2}s^{-1}$ at RT, respectively. These values of the corresponding membranes were slightly increased with increasing pressures. |
| Key words:
$Al_2O_3$-CuO-ZnO, Span80, Sol-gel process, Hydrogen permeability |
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