Method of making electrode for preparing hydrogen peroxide

Details Method of making electrode for preparing hydrogen peroxide Method of making electrode for preparing hydrogen peroxide

1974-10-23

1976-07-06

Kendall, Ralph S.

Coating processes

Electrical product produced

Carbon coating

427120, 427295, 427372, 204 84, 204294, 204265, 204290R, C25B 130, C25B 1112

Patent

active

039682730

ABSTRACT:
A method of making an electrode for preparing hydrogen peroxide, according o which active carbon during application of heat is mixed with a binder and a hydrophobic substance of addition. The thus obtained mixture is applied to an electrically conductive carrier structure. More specifically, active carbon is glowed in a vacuum at a temperature above 900.degree., preferably at a temperature of from 1000.degree. to 1250.degree.C. After the active carbon powder has been cooled in a vacuum, the active carbon powder is mixed with a solvent containing the binder and the hydrophobic substance of addition. The thus obtained mixture is applied to the electric conductive carrier substance. Finally, the mixture thus applied to the carrier structure is dried. The thus produced electrode is arranged in an electrolytic cell filled with an electrolyte. This cell comprises a gas permeable carbon cathode communicating with a gas chamber in which a pressure higher than atmospheric pressure prevails and also comprises an anode separated from the carbon cathode by a diaphragm. As carbon electrode there is used a carrier structure coated with active carbon powder which by means of a non-coated side facing away from the gas chamber rests on a metallic grate.

REFERENCES:
patent: 2000815 (1935-05-01), Berl
patent: 2093989 (1937-09-01), Berl
patent: 3793173 (1974-02-01), Kawahata
patent: 3855071 (1974-12-01), Koppelman
patent: 3856574 (1974-12-01), Amagi et al.
patent: 3856640 (1974-12-01), Halfar

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