Abstract
A thin palladium composite membrane was produced by modified electroless plating procedure. Compared with the conventional electroless plating procedure, the modified electroless plating procedure consists of the activation of a ceramic substrate by the sol–gel process of a Pd(II)-modified boehmite sol. Additionally, the infiltration of an electroless plating solution to a porous substrate during the deposition of palladium was employed with the filter device to improve adherence of a palladium layer to a substrate. The resulting membrane with a thickness of about 1 μm has a high compactness. The membrane shows a hydrogen selectivity of 20–130 for H 2/N 2, and a hydrogen flux of 1.8–87 m 3/m 2·h, depending on operation conditions.
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