Browsing by Author "Huang, C. A."

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Preparation of palladium membrane by electroplating on AISI 316L porous stainless steel supports and its use for methanol steam reformer
(2008-04-30)
Chen, S. C.
;
Tu, G. C.
;
Hung, Caryat C. Y.
;
Huang, C. A.
;
Rei, M. H.
A novel electroplating method of preparing Pd-membrane on an AISI 316L porous stainless steel support is successfully developed by proper control of rotation speed of the support. The use of low-current density with high-rotation speed enables us to avoid hydrogen absorption during electroplating and to prepare smooth thin surfaced membrane with defect free. The electroplated-Pd-membrane shows well property in the hydrogen permeation, flux and excellent permselectivity (H-2/He > 100,000), and is used in a membrane-assisted steam reformer of methanol for the production of high-purity hydrogen. It was also found that the membrane spontaneously exhibited to resist hydrogen embrittlement under the phase-transition temperature of 280 degrees C, when operated in the temperature range of 250-350 degrees C under the hydrogen pressure of 9 kgf/cm(2). (C) 2008 Elsevier B.V. All rights reserved.