W.L. Zhang
,
B.Q. Jiang
,
Y.S. Sun
,
F. Lin and L. Gu Chemical Engineering Department of Nanchang University
,
Nanchang 330029
,
China
金属学报(英文版)
A stable colloidal boehmite sol was made with the aluminium iso propoxide made in China and used to prepare the supported γ alumina membrane using sol gel method. The γ alumina thin layer was characterized by SEM, N 2 sorption method and permeation measurement. The γ alumina membrane was prepared with uniform surface, thickness of 3 μm and average diameter of about 5 nm. The permeabilities of the single gases of H 2, N 2, Ar and their separation factors were measured. The experimental data explained a behavior of Knudsen diffusion for the gas transport through the thin membrane.
关键词:
boehmite
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null
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null
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