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EQUIPMENT & MEASURING DEVICES

Palladium Membrane for Hydrogen Purification

Tanaka Precious Metals has succeeded in developing an ultra-thin membrane for  an ultra-high purification process of hydrogen gas.

Palladium is the only metal that has hydrogen permselectivity. Tanaka Precious Metals has succeeded in developing a thin Pd alloy membrane which can be used in the purification process of hydrogen and exploits this permselectivity of Pd to hydrogen. With our ultra-thin film processing technology and high purification technology, we are able to offer highly reliable hydrogen permeable films with very few pinholes and maximum hydrogen permeability. Our hydrogen permeable films are available as cut to size foils or cut foils, also as rolled foil or tube materials. 

Applications

  • High-purity hydrogen gas purifiers 
  • Steam reforming based hydrogen production units, etc. 

Hydrogen permeation with palladium

Material Composition

Pd and Pd alloy Membrane

AlloyChemical Composition (wt%)
Pd-
Pd-AgAg 0∼100
Pd-CuCu 0∼100
Pd-AuAu 0∼100
Pd-YY 0∼10
Pd-GdGd 0∼12

Above compositions are examples of our wide range of production capability. Please feel free to contact us about the other compositions.

Dimensional Capability

AlloyThicknessWidth
Pd> 5µm< 200 mm
Pd-Ag> 5µm< 200 mm
Pd-Cu> 5µm< 200 mm
Pd-RE> 15µm< 200 mm

Width: Maximum 200mm
Length: Any length including coil length

Advantageous Features of Tanaka Precious Metals Pd Alloy Tube

Dimensional Capability

Wall Thickness Outer DiameterLength
Min. 45μm
(Standard Tolerance +/- 5μm)
Min.1.5mm
(Standard Tolerance +/- 0.02mm)

Max.1,500mm
(Standard Tolerance +/- 2mm)

Standard Alloy Composition

Pd-Ag23wt%Pd-Cu40wt%
CompositionPd

77%±0.5Pd60%±0.5
Ag

Bal.CuBal.
ImpuritiesAl

<100ppmAl<100ppm
Cu, Fe, Si

<50ppmFe, Si<50ppm
Mg

<25ppmMg<25ppm
Ni, Sn, Zn

<20ppmNi, Sn, Zn<20ppm

Above compositions are examples of our wide range of production capability.
Please feel free to contact us about the other compositions.

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