An amperometric carbon monoxide sensor based on the steady-state difference response technique

  • Tan Y
  • Tan T
  • 3

    Readers

    Mendeley users who have this article in their library.
  • 11

    Citations

    Citations of this article.

Abstract

A solid-state CO sensor has been fabricated by coating the cathode of a Pt/yttria-stabilized zirconia/Pt cell with a layer of copper oxide/zinc oxide/aluminium oxide catalyst mixture. The sensor response is defined as the difference between the two steady-state currents prior to and after the introduction of CO into the O2N2carrier-gas mixture. The two steady-state current measurements are made in one continuous time course including the stabilization of the sensor in the carrier gas, the injection of CO and finally the stabilization period for the sensor to reach its second steady-state condition. A linear response is obtained with this difference response technique up to 0.18 mol% CO, with a sensitivity increasing from 4.93 mA (mol% CO)−1at 1003 K to 9.54 mA (mol% CO)−1at 1103 K. The sensor response is verified to be a direct measure of the rate of catalytic oxidation of CO in the catalyst layer by the good correlation of the linear range sensitivity according to pseudo first-order kinetics of the catalytic oxidation of CO. © 1995, All rights reserved.

Author-supplied keywords

  • Amperometric sensors
  • Carbon monoxide sensors
  • Difference response technique

Get free article suggestions today

Mendeley saves you time finding and organizing research

Sign up here
Already have an account ?Sign in

Find this document

Authors

  • Y. Tan

  • T. C. Tan

Cite this document

Choose a citation style from the tabs below

Save time finding and organizing research with Mendeley

Sign up for free