A FEASIBILITY STUDY TO INCREASE THE ACTIVITY OF OXIDES WITH OXYGEN AND TO LOWER THE IGNITION TEMPERATURE OF SLURRY METALS.
Abstract
The influence of coping on the reactivity of cobalt oxides was investigated by DTA and TGA (thermogravimetric analysis). Particularly, the influence of anionic impurities such as fluorides was studied. Additional doping procedures were also explored. Samples were vacuum-coated under potassium vapor. It is found that this procedure reduces the cobalt oxide, Co3O4, almost completely to metallic cobalt. Doping with fluorides, especially with PbF2, has the effect of shifting the exothermal oxidation peaks by as much as 60C. Investigations of the system Pd, PdO lead to the conclusion that the oxidation of pure Pd is primarily a surface reaction as indicated by only a 1% weight change during repeated decomposition-oxidation cycles. Doping with fluorides, particularly with Na2SiF6 resulted in a 10-fold increase in the reaction rate as indicated by a pronounced increase in exothermal and endothermal DTA band areas. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 29, 1965
- Accession Number
- AD0624540
Entities
People
- Aaron J. Becker
- Eli S. Freeman
- Winfried Rudloff
Organizations
- IIT Research Institute