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Dependence of the catalytic activity of palladium-ruthenium alloys on their composition and conditions of heat treatment
- Source :
- Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 22:2377-2381
- Publication Year :
- 1973
- Publisher :
- Springer Science and Business Media LLC, 1973.
-
Abstract
- 1. The catalytic activity of binary alloys of palladium containing 4.4–9.2% Ru was investigated as a function of' the conditions of their heat treatment in an atmosphere of various gases (air, H2, Ar). 2. The results of the investigation were treated according to a program permitting calculation of the parameters of the Arrhenius equation on the assumption of normal and logarithmic-normal distributions of their values. The correctness of the hypothesis of a logarithmic-normal distribution was demonstrated. 3. Raising the temperature of treatment of the alloys in a stream of air from 350 to 750°, as well as repeated treatment in a stream of air at 750°, caused an appreciable increase in the catalytic activity, associated with an increase in the preexponential factors. An even greater increase in the activity, due to a decrease in the activation energy, is also achieved as a result of treatment of the catalyst with air, and then with H2, at 750° with rapid cooling in H2.
Details
- ISSN :
- 15739171 and 05685230
- Volume :
- 22
- Database :
- OpenAIRE
- Journal :
- Bulletin of the Academy of Sciences of the USSR Division of Chemical Science
- Accession number :
- edsair.doi...........243054eeb5e20b6db68ebe50b8c2d1b0