Hydrocarbon sensors and materials therefor

Details Hydrocarbon sensors and materials therefor Hydrocarbon sensors and materials therefor

1998-02-11

2000-08-15

Tung, T.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204426, 2057845, 205787, G01N 27407

Patent

active

061030805

ABSTRACT:
An electrochemical hydrocarbon sensor and materials for use in sensors. A suitable proton conducting electrolyte and catalytic materials have been found for specific application in the detection and measurement of non-methane hydrocarbons. The sensor comprises a proton conducting electrolyte sandwiched between two electrodes. At least one of the electrodes is covered with a hydrocarbon decomposition catalyst. Two different modes of operation for the hydrocarbon sensors can be used: equilibrium versus non-equilibrium measurements and differential catalytic. The sensor has particular application for on-board monitoring of automobile exhaust gases to evaluate the performance of catalytic converters. In addition, the sensor can be utilized in monitoring any process where hydrocarbons are exhausted, for instance, industrial power plants. The sensor is low cost, rugged, sensitive, simple to fabricate, miniature, and does not suffer cross sensitivities.

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