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- W2050247949 abstract "ABSTRACTPorous ceramic membranes consisting of Ce 1-x Y x O 2−δ were developed for hydrogen permeation tests. Various amounts (x = 0,0.05, 0.1, 0.2) of yttrium were doped to ceria to study the effect of yttrium doping on ceria membranes on various properties, includ-ing hydrogen permeability. Ce 1−x Y x O 2−δ powder was synthesized by the sol-gel method. These membranes were fabricated by pressingand sintering at 1300°C for 6 h. As the amount of yttrium increased, the grain size of the membrane decreased. Hydrogen permeabil-ity was improved as the yttrium content increased. Selective permeability of hydrogen compared to CO is explained by electric con-ductivity. As the temperature rose, both the hydrogen perm-selectivity and electric conductivity on Ce 0.8 Y 0.2 O 1.9 improved.Key words : Porous ceramic membrane, Hydrogen permeation tests, Sol-gel method, Ce 1-x Y x O 2-δ 1.Introduction onsidering the world energy crisis, there is an increas-ing demand for hydrogen energy as an alternative tofossil fuel, not only in the petrochemical industry but also inrenewable energy. Membranes composed of Pd alloys areknown as superior classic hydrogen perm-selective mem-branes, but their high cost is a fatal hindrance to their wideapplication. Thus, cost-effective inorganic ceramic mem-branes have been widely studied. Among other materials,porous inorganic membranes have received attention due totheir availability either at high operating temperatures orin organic vapors." @default.
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- W2050247949 date "2013-11-30" @default.
- W2050247949 modified "2023-10-18" @default.
- W2050247949 title "Hydrogen Permeance of Ce1-xYxO2-δMembranes According to Yttrium Content" @default.
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- W2050247949 doi "https://doi.org/10.4191/kcers.2013.50.6.451" @default.
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