Preparation of Pore-fill-type Palladium–Porous Alumina Composite Membrane for Hydrogen Separation

Preparation of Pore-fill-type Palladium–Porous Alumina Composite Membrane for Hydrogen Separation

A method for formation of the palladium layer in a thermally stable porous substrate was studied. A composite membrane with Pd layer encapsulated in a porous α-alumina substrate (Pd/Al2O3(PF)) was successfully prepared by a new seeding technique and electroless plating. From SEM–EDX, the Pd layer wa...

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Veröffentlicht in:Chemistry letters 2011-01, Vol.40 (1), p.19-21
Hauptverfasser: Nagata, Kensuke, Miyamoto, Manabu, Watabe, Tsuyoshi, Fujioka, Yuichi, Yogo, Katsunori
Format: Artikel
Sprache:eng
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Zusammenfassung:A method for formation of the palladium layer in a thermally stable porous substrate was studied. A composite membrane with Pd layer encapsulated in a porous α-alumina substrate (Pd/Al2O3(PF)) was successfully prepared by a new seeding technique and electroless plating. From SEM–EDX, the Pd layer was observed only in the porous substrate at a depth of 10 µm from the top surface. This membrane showed extremely high H2 permselectivity (α H_2/N_2 > 10000) at 773 K and good stability.
ISSN:0366-7022
1348-0715
DOI:10.1246/cl.2011.19