A PLATINUM CATALYST FOR THE COMBINATION OF HYDROGEN AND OXYGEN IN THORIA SLURRIES. Technical Report No. XII

Technical Report · Tue Aug 15 04:00:00 EDT 1961

OSTI ID:4805702

Horton, R M; Hanson, C K; Wadswoth, M E

A platinum catalyst was prepared by refluxing an aqueous suspension of platinic acid and thorium hydroxide together. A small amount of this catalyst was added to a thoria slurry in an autoclave. After the slurry was heated and while it was being agitated, oxygen and hydrogen were added to the autoclave and their rate of combination followed by recording the pressure as a function of time. The reactions were usually first order with respect to pressure. Results indicated that the catalyst was adsorbed on the previously inert thoria, causing an increase in the rate. The activation energy for the process was 4.0 kcal/mole. The kinetics were found to be first order with respect to oxygen. These facts suggested that the slow step in the reaction was the diffusion of oxygen to the catalyst. The catalyst was found to maintain its activity even after 100 tests upon the same charge. (auth)

• Research Organization: Utah. Univ., Salt Lake City. Inst. of Metals and Explosives Research
• NSA Number: NSA-16-005314
• OSTI ID: 4805702
• Report Number(s): TID-14468
• Country of Publication: United States
• Language: English

Related Subjects

ACIDS
ACTIVATION
ADSORPTION
CATALYSIS
CHEMICAL REACTIONS
CHEMISTRY
COUNTER CURRENT
DIFFUSION
HEATING
HYDROGEN
OXYGEN
PLATINUM
PLATINUM COMPOUNDS
PRESSURE
PRESSURE VESSELS
REACTION KINETICS
SLURRIES
SUSPENSIONS
TESTING
THORIUM HYDROXIDES
THORIUM OXIDES
WATER