Electrochemical measuring cell

Details Electrochemical measuring cell Electrochemical measuring cell

1974-12-02

1977-06-14

Kaplan, G. L.

Chemistry: electrical and wave energy

Processes and products

Vacuum arc discharge coating

204 1T, G01N 2746, G01N 2752

Patent

active

040295630

ABSTRACT:
An electrochemical measuring cell for the continuous measurement of sulfur dioxide content of the air in emission and immission areas, comprises a cell housing which has a test gas cell chamber therein for the connection for circulating the gas to be tested into the chamber. The chamber also contains a diffusion electrode which serves as an anode and which is made up of a reversible organic redox system. The cathode comprises an active mass having a redox potential higher than the redox potential of the anode. An immobilized electrolyte is disposed between the anode and the cathode and the anode and cathode are connected to a device for measuring the short circuit current. The diffusion electrode is manufactured from a mixture of chloranil and sodium tungsten bronze which is pulverized in a ball mill for sixteen hours and mixed with a polyethylene powder and sodium sulfate and is then compressed. The cathode is made of a manganese dioxide which is intimately mixed with graphited coal as the conductive additive. The immobilized electrolyte is made of an asbestos fiber and phosphoric acid paste.

REFERENCES:
patent: 2117596 (1938-05-01), Bender et al.
patent: 2861926 (1958-11-01), Jacobson
patent: 3493484 (1970-02-01), Berg et al.
patent: 3622488 (1971-11-01), Chand et al.
patent: 3756923 (1973-09-01), Dahms
patent: 3776832 (1973-12-01), Oswin et al.
patent: 3795589 (1974-03-01), Dahms
patent: 3803006 (1974-04-01), Krueger et al.

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