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- W1997763867 abstract "Abstract Microporous zirconia membranes, in which the pore size distribution was controlled by optimizing the calcination temperature, were prepared by a sol-gel technique. The membrane with an average pore size 2 SO 4 ) solutions, followed by heat-treatment. The gas permeation properties of the membranes were evaluated for single-component and binary-component systems of H 2 , N 2 , CO 2 , iso-C 4 H 10 and NH 3 . The zirconia membrane, which was modified by treatment with a 0.50 mol l −1 H 2 SO 4 solution, showed a high hydrogen permeance of (2.8–3.0)×10 −6 mol Pa −1 m −2 s −1 , and the H 2 selectivities over CO 2 and iso-C 4 H 10 were 6 and 9, respectively, for equimolar binary systems. The experimental data showed that the H 2 selectivity over the other gases increased, and the permeance decreased, when increasing concentrations of the H 2 SO 4 solution were used. The permeance to NH 3 for the H 2 SO 4 -modified membranes suggests that acidic sites were introduced as a result of the modification." @default.
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- W1997763867 date "2001-09-01" @default.
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- W1997763867 title "Sulfuric acid-modified zirconia membrane for use in hydrogen separation" @default.
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- W1997763867 doi "https://doi.org/10.1016/s1383-5866(01)00148-4" @default.
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