Chemistry: electrical and wave energy – Processes and products – Vacuum arc discharge coating
Patent
1979-05-11
1980-11-25
Walton, Donald L.
Chemistry: electrical and wave energy
Processes and products
Vacuum arc discharge coating
429 34, G01N 2746
Patent
active
042356903
ABSTRACT:
This invention directly converts some foreign trace gases that may be present in the air into an electrical current. Such gases include hydrogen sulphide, ammonia and chlorine. A rotating cylinder of glass, ceramic or plastic is coated on the outer surface with pure gold or pure platinum. This cylinder rotates, by external means, in a semi-enclosed chamber where the lower part of the cylinder extends out of the bottom of the chamber into a second chamber which contains an electrolyte which may be plain water. Thus, the cylinder as it rotates, is alternately exposed to gases in the first chamber and then to immersion in the water in the second chamber which contains an electrode. The cylinder itself is the other electrode. Any adsorbed trace gases on the cylinder wall will be immersed in water where the gases will become disassociated into ions. Some ions will remain on the cylinder wall and others will travel to the electrode in the water. If the cylinder is plated with gold the electrode must be gold also. The steady adsorption of gases and their breakdown into ions as the cylinder rotates results in a continuous electrical current that is easily measured.
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