Spontaneous deposition of metals using fuel fed catalytic electr

Details Spontaneous deposition of metals using fuel fed catalytic electr Spontaneous deposition of metals using fuel fed catalytic electr

1980-10-14

1983-05-31

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204294, 204295, 204296, 204291, 204292, 204DIG4, C25B 1103, C25B 1104, C25B 1106, C25C 112

Patent

active

043859704

ABSTRACT:
The present invention encompasses the use of a specific fuel fed electrode in depositing metals from solutions thereof and in the absence of an external applied potential. Basically as shown in FIG. 1, the electrode comprises an electrically conductive porous substrate 3 bearing on one surface thereof a fuel activating catalyst 4. The porosity of the substrate is sufficient that the current density at surface 2 of the substrate 3 opposite the catalyst 4 will assure substantially complete depletion of metal ions very near the surface of the porous substrate, whereby the catalyst surface and the pores remain substantially free of deposited metal.

REFERENCES:
patent: 4035254 (1977-07-01), Gritzner
patent: 4260469 (1981-04-01), McIntyre et al.
PCT WO81/01159, "Process and Apparatus for Producing Metals at Porous Hydrophobic Catalytic Barriers" by Judd et al., 10-26-79.

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