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Language: English

Conflict of Interest: In relation to this article, we declare that there is no conflict of interest.

Publication history: Received July 5, 2016
Accepted September 5, 2016

This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Electroless Pd deposition on a planar porous stainless steel substrate using newly developed plating rig and agitating water bath

Beom-Seok Seo^{1 2} Jae-Yun Han^{1 3} Kwan-Young Lee^2† Dong-Won Kim⁴ Shin-Kun Ryi^{1 3†}

¹Advanced Materials and Devices Laboratory, Korea Institute of Energy Research (KIER), 152 Gajeong-ro, Yuseong-gu, Daejeon 34129, Korea ²Department of Chemical and Biological Engineering, Korea University, 5-Ga, Anam-dong, Sungbuk-gu, Seoul 02841, Korea ³, Korea ⁴Department of Advanced Materials Engineering, Kyonggi University, Suwon, Gyeonggi-do 16227, Korea

Korean Journal of Chemical Engineering, January 2017, 34(1), 266-272(7), 10.1007/s11814-016-0256-6

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Abstract

A new plating bath was developed to prevent palladium plating in the pores of the porous stainless steel support when using plate-type porous substrate. The plating bath, composed of a holder, a rubber O-ring and a bottom, provides very simple assembly and is very effective in preventing palladium plating in the pores of porous stainless steel. The agitation of the plating solution increases plating rate significantly because the agitation improves the external mass transfer of Pd ion and reducing agent to the membrane surface facilitating ~99.7% plating yield of palladium ion. This new plating method carried out at a temperature range of 293 to 298 K provides a very simple and economic membrane manufacturing process. Using a newly developed plating rig, an 88.9-mm diameter membrane was fabricated, and gas permeation tests showed that the hydrogen permeation flux reached ~0.9mol s-1 m-2 at 873 K and a pressure difference of 300 kPa and selectivity (H2/N2) was ~1,850 at 873 K with a pressure difference of 100 kPa.

Keywords

Pd Membrane Hydrogen Electroless Plating Porous Stainless Steel External Mass Transfer

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