Direct Measurement of Oxygen Pressure in High-Temperature Gases
Study on oxygen concentration cells at high temperature-I
1963 Volume 49 Issue 12 Pages 1760-1765
Details
1963 Volume 49 Issue 12 Pages 1760-1765
The partial pressure of oxygen of 10-1 down to 10-20 atm. in carbon monoxide-carbon dioxide and argon-oxygen mixtures has been measured at temperatures of 800°C, 900°C, 1000 and 1200°C by an oxygen concentration cell method with a solid electrolyte, ZrO2-CaO, which provides pure oxygen anion conduction due to oxygen vacancies at high temperatures.
The cells employed are shown below:
(1) CO.ECO2: FeO-Pt|ZrO2-CaO|FeO-Fe|Pt
(2) CO.ECO2: Pt|ZrO2-CaO|NiO-Ni|Pt
(3) CO.ECO2: FeO-Pt|ZrO2-CaO|Cu2O-Cu|Pt
(4) Air or Ar-O2 : Pt|ZrO2-CaO|NiO-Ni|Pt
It was shown that this method is very convenient in analyzing directly the gas composition of CO and CO2, or Ar and O2 at the elevated temperatures as well as of other gas mixtures.
Calibration curves of EMF against gas composition are presented. The expected advantages and disadvantages in the case of industrial application are also discussed.
