Detection of carbon monoxide

Details Detection of carbon monoxide Detection of carbon monoxide

1975-05-28

1977-07-19

Yudkoff, Norman

Chemistry: physical processes

Physical processes

Crystallization

23254E, 60276, 73 27R, 324 71R, 324 71SN, 338 13, 338 22R, 4232135, G01N 2716, G01N 3112, H01C 300

Patent

active

040365921

ABSTRACT:
In a catalytic method for selectively detecting carbon monoxide in the presence of hydrogen in an oxygen-containing atmosphere, such as may be used in monitoring exhaust gases from combustion processes, the catalyst is a platinum-rhodium alloy containing not less than about 10% rhodium. The catalyst is maintained at a temperature such that it will cause combustion of carbon monoxide but will not readily cause combustion of hydrogen, the thermal effect on the catalyst resulting when a test atmosphere is brought into contact with it being sensed to provide a measure of the carbon monoxide concentration in that atmosphere.

REFERENCES:
patent: 2768069 (1956-10-01), Thompson
patent: 3560160 (1971-02-01), Lanneau
patent: 3865550 (1975-02-01), Bott et al.
patent: 3871827 (1975-03-01), Seiler et al.
patent: 3893230 (1975-07-01), Stadler et al.

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