Hydrogen sulphide sensor

Details Hydrogen sulphide sensor Hydrogen sulphide sensor

1987-06-30

1989-04-18

Walton, Donald L.

Chemistry: electrical and wave energy

Processes and products

Coating, forming or etching by sputtering

204410, 204431, 73 27R, C23C 1400, G01N 3100

Patent

active

048224650

ABSTRACT:
Hydrogen Sulphide is a toxic gas present in many environments. It is necessary for a detector to be highly sensitive and not to respond to other common gases. The sensor is made up of electrodes (5) coated with a thin layer (6) of material comprising the oxides of molybdenum and tungsten and in the presence of hydrogen sulphide gas, changes its resistance. The layer is formed in such a way that a bronze-like ordered lattice is formed, containing molybdenum, tungsten and oxygen ions.

REFERENCES:
patent: 4197089 (1980-04-01), Willis
patent: 4339424 (1982-07-01), Jacobson et al.
patent: 4453151 (1984-06-01), Leary

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