Chemistry: electrical and wave energy – Processes and products – Electrostatic field or electrical discharge
Patent
1979-08-15
1981-12-08
Andrews, R. L.
Chemistry: electrical and wave energy
Processes and products
Electrostatic field or electrical discharge
204129, 204130, C25B 100, C25B 102
Patent
active
043046436
ABSTRACT:
Particles of electrically conducting activated carbon of about 500 to 1,000 m.sup.2 /g specific surface added to an electrolyte provided by a solution of sulfur dioxide in water are found to provide a substantial reduction of the electrical energy requirement in the electrolysis of such an electrolyte for the production of hydrogen and sulfuric acid. A further reduction of energy consumption is obtained by additionally introducing iodine in the electrolyte in an amount not exceeding 1% by weight of the entire solution. Use of an anode in which the surface of a graphite base body is coated with a thin layer of activated carbon bonded to the graphite body by means of a binder, such as rubber, also reduces the electrical energy requirement for the electrolysis. To coat the surface of the electrode, carbon particles are first dispersed in a rubber solution and the suspension is then applied to the surface of the graphite body as a thin layer.
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Wiesener, "The Electrochemical Oxidation of Sulphur Dioxide at Porous Catalysed Carbon Electrodes in Sulphuric Acid", Electrochimica Acta, (1973), 18, pp. 185-189.
Divisek Jiri
Schmitz Heinrich
Struck Bernd D.
Andrews R. L.
Kernforschungsanlage Julich Gesellschaft mit beschrankter Haftun
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