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Novel Pd/SiO2 Membrane Supported on Porous Stainless Steel for High Temperature Hydrogen Separation

Published online by Cambridge University Press:  26 February 2011

Caili Su ,
Tetsuro Jin ,
Koji Kuraok ,
Yasuyuki Matsumura  and
Tetsuo Yazawa
Caili Su*
Affiliation:
Green Life Materials Research Group, Special Division of Green Life technology, National Institute of Advanced Industrial Science and Technology (AIST), 1–8–31 Midorrigaoka, Ikeda City, Osaka 563–8577, Japan.
Tetsuro Jin*
Affiliation:
Green Life Materials Research Group, Special Division of Green Life technology, National Institute of Advanced Industrial Science and Technology (AIST), 1–8–31 Midorrigaoka, Ikeda City, Osaka 563–8577, Japan.
Koji Kuraok
Affiliation:
Green Life Materials Research Group, Special Division of Green Life technology, National Institute of Advanced Industrial Science and Technology (AIST), 1–8–31 Midorrigaoka, Ikeda City, Osaka 563–8577, Japan.
Yasuyuki Matsumura
Affiliation:
Chemical Research Group, Research Institute of Innovative Technology for the Earth (RITE), 9–2 Kizukawadai, Kizu-cho, Soraku-gun, Kyoto 619–0292, Japan.
Tetsuo Yazawa
Affiliation:
Department of Material Science and Chemistry, Graduate School of Engineering, Hemiji Institute of Technology. 2167 Shosha, Hemeji 671–2201, Japan.
*
* Tel. 81–72–751–9642; Fax. 81–72–751–9627. E-mail: [email protected], [email protected].
* Tel. 81–72–751–9642; Fax. 81–72–751–9627. E-mail: [email protected], [email protected].
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Abstract

Thin Palladiun/SiO2 composite membrane supported on porous stainless steel has been fabricated by a novel preparation procedure. SiO2 colloid suspensions with different particle sizes were applied to modify the pore size of the substrate and also form an intermediate SiO2 layer to support the palladium layer. Palladium nuclei were seeded by a chemical vapor deposition process using Pd(F6acac)2 as metal precursor, and then a palladium layer thinner than 10 μm was prepared by electroless plating. The membrane had a hydrogen permeance of 2.7×10−6 mol/m2.s.Pa and a permselectivity of PH2 / PN2 in the range of 300–400 at 773K. The preparation process showed that SiO2 layer had a unique property for palladium adhesion compared with other studied metal oxides. The seeding process by chemical vapor deposition showed this step is significant for the preparation of a defect-free membrane. A novel electroless plating process was also applied using a weak acidic both, which is different from the usually used basic ones containing N2H4. The surface morphology and component of the membrane have been studied by scanning electron micrograph (SEM) and energy-dispersive X-ray analysis (EDX). The permeance and permselectivity of the membrane to hydrogen have bean measured at different temperatures.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 801: Symposium BB – Materials and Technologies for a Hydrogen Economy , 2003 , BB6.8
Copyright
Copyright © Materials Research Society 2004

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Footnotes

ζ

Present Address: Faculty of Maritime Sciences, Kobe University. Fukaeminami, Higashinada, Kobe 658–0022, Japan.

References

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