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.
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)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1968
- Accession Number
- AD0678384
Entities
People
- Jerome V. Connoy
- Peter Mark
Organizations
- Princeton University