System using SO.sub.2 as an anode depolarizer in a solid oxide e

Details System using SO.sub.2 as an anode depolarizer in a solid oxide e System using SO.sub.2 as an anode depolarizer in a solid oxide e

1981-09-29

1983-11-01

Andrews, R. L.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

C25B 102

Patent

active

044128959

ABSTRACT:
Hydrogen gas is produced from water vapor by: (1) supplying water vapor to the cathode and SO.sub.2 to the anode of an electrolysis cell utilizing a solid oxide electrolyte which has a high oxygen ion conduction but which is impervious to H.sub.2 and SO.sub.2, between the cathode and anode, to provide H.sub.2 and a mixture of SO.sub.2 and SO.sub.3, (2) passing the SO.sub.3 into a reduction reactor operating at a temperature effective to decompose it and provide a mixture of SO.sub.2 and O.sub.2, and (3) passing the SO.sub.2 back to the anode of the electrolysis cell.

REFERENCES:
patent: 3616334 (1971-10-01), Aker et al.
patent: 3630879 (1971-12-01), Spacil et al.
patent: 3888750 (1975-06-01), Brecher et al.
patent: 3993653 (1976-11-01), Blum et al.
patent: 4024036 (1977-05-01), Nakamura et al.
patent: 4059496 (1977-11-01), Schulten et al.

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