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1994-04-20

1996-09-03

Bell, Bruce F.

Electrolysis: processes, compositions used therein, and methods

Electrolytic analysis or testing

For oxygen or oxygen containing compound

204421, 204424, 204426, 204427, G01N 2726

Patent

active

055520251

ABSTRACT:
A sensor for measuring sulphur dioxide in flue gases comprises a sensing electrolyte of doped .beta.-alumina or doped NASICON. The dopant serves to increase conductivity at grain boundaries in the sensing element or at the electrode interface, thereby to increase the rate of depolarisation. Preferred dopants are copper silver and nickel.

REFERENCES:
patent: 4276202 (1981-06-01), Schmidberger et al.
patent: 4388155 (1983-06-01), Chamberland et al.
patent: 4526844 (1985-07-01), Yoldas et al.
patent: 4715944 (1987-12-01), Yanagida et al.
patent: 4789454 (1988-12-01), Badwal et al.
patent: 5192404 (1993-03-01), Fray et al.

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