Ultra thin Pd membrane on α-Al2O3 hollow fiber by electroless plating: High permeance and selectivity

ABSTRACTIn this work, the synthesis of dense Pd/α–Al2O3 and Pd-Ag/α–Al2O3 ceramic composite membranes was done through the sequential electroless plating technique of Pd and Ag. The precursors are solutions of PdCl2 and AgNO3 and N2H4 salts, as reducing agent. The membranes were characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), and Energy Dispersive Spectroscopy (EDS). The permeation tests of H2 and N2 was carried out at 20 psi of pressure and at 25°C, resulted πH2=5.2x10-9 mol H2/m2·s·Pa and πN2=8.2x10-10 mol N2/m2·s·Pa.

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Preparation Technique of a Single Pd Membrane Using Electroless Plating for Hydrogen Permeation

Transactions of the Materials Research Society of Japan ◽

10.14723/tmrsj.39.1 ◽

2014 ◽

Vol 39 (1) ◽

pp. 1-5

Author(s):

Masakazu Mukaida ◽

Nobuo Takahashi ◽

Misaki Ishitsuka ◽

Shigeki Hara ◽

Hiroyuki Suda ◽

...

Keyword(s):

Electroless Plating ◽

Hydrogen Permeation ◽

Preparation Technique ◽

Pd Membrane

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Preparation of thin Pd membrane on CeO2-modified porous metal by a combined method of electroless plating and chemical vapor deposition

Journal of Membrane Science ◽

10.1016/j.memsci.2005.06.023 ◽

2006 ◽

Vol 269 (1-2) ◽

pp. 101-108 ◽

Cited By ~ 40

Author(s):

Jianhua Tong ◽

Caili Su ◽

Koji Kuraoka ◽

Hiroyuki Suda ◽

Yasuyuki Matsumura

Keyword(s):

Chemical Vapor Deposition ◽

Electroless Plating ◽

Vapor Deposition ◽

Chemical Vapor ◽

Porous Metal ◽

Combined Method ◽

Pd Membrane

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The Study on the Dispersants and Structures of Ni-P-α-Al2O3 Composite Electroless Plating Coating

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.373-374.281 ◽

2008 ◽

Vol 373-374 ◽

pp. 281-284 ◽

Cited By ~ 1

Author(s):

Li Ming Feng ◽

Ke Gao Liu ◽

X.F. Guo

Keyword(s):

Electroless Plating ◽

Ordinary Condition ◽

Nickel Matrix ◽

Optimum Conditions ◽

Sem Images ◽

Base Solid Solution ◽

The Stability ◽

Α Al2o3 ◽

Dispersing Ability ◽

Emulsifying Ability

Dispersants are selected and optimized by determining the height of emulsion in the colorimetric cylinder after standing in order to ensure the homogeneity of the powder and the stability of electroless plating solution. Experimental results show that non-ionic surfactants such as PEG6000,PEG10000,OP-10 have stronger emulsifying ability to α-Al2O3 powder in ordinary condition and IW has more stability at 80~90°C. The optimum conditions are suggested as PEG6000 8g, IW 0.95g and ethanol 3mL per 50mL solution. Moreover, this composite electrolessplating solution is stable for seven days under 90°C. Therefore it has more dispersing ability. The SEM images show that the powder in the coating is homogeneous. The electroless plating coating consists of α-Al2O3 and amorphous Ni-P that will change into crystal Ni3P and Ni-base solid solution after heat treatment at 400°C for one hour, the α-Al2O3 powders are dispersed evenly in the nickel matrix.

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