Accession Number:

AD0678384

Title:

ELECTRICAL CONDUCTIVITY CHANGES DURING HETEROGENEOUS CATALYSIS: A STUDY OF THE INTERFACIAL POLARIZATION OF A POWDERED ZINC OXIDE CATALYST BY AUDIO FREQUENCY RELAXATION MEASUREMENTS DURING THE CATALYTIC OXIDATION OF CARBON MONOXIDE.

Descriptive Note:

Corporate Author:

PRINCETON UNIV N J

Personal Author(s):

Report Date:

1968-10-01

Pagination or Media Count:

104.0

Abstract:

The electrical conductivity changes of an industrial, powdered zinc oxide catalyst during the chemisorption and catalytic oxidation of carbon monoxide in an isothermal tubular reactor were derived from a study of interfacial polarization by a dispersion analysis of audio frequency relaxation measurements in situ at conditions of temperature 100C - 350C and pressure 5 p.s.i.g. encountered in industrial process systems. The conductivity changes observed during carbon monoxide oxidation are consistent with both the equilibrium conversion of oxygen as a function of residence time, and the Arrhenius dependence of the oxidation rate constant. Although a conductivity-activity correlation has not yet been quantitatively established, owing to instrumentation limitations, the asymptotic behavior of oxygen conversion as a function of residence time indicates the existence of such a correlation. Author

Subject Categories:

  • Physical Chemistry

Distribution Statement:

APPROVED FOR PUBLIC RELEASE