The oxidation-reduction kinetics of palladium powder

Journal Article · Tue Mar 01 04:00:00 EST 1983 · Metall. Trans., B; (United States)

DOI:https://doi.org/10.1007/BF02670874· OSTI ID:5416014

Munir, Z A; Coombs, P G

The cyclic oxidation-reduction of submicrometer sized palladium powder was investigated over the temperature range 848 to 923 K. The total oxygen uptake decreased with increasing number of cycles as a consequence of sintering. Sintering was restricted to the reduction steps in these cycles. The relationships for the rate constants of the oxidation and reduction processes are, respectively, (1.04)10/sup 6/ exp(-(74.1)10/sup 3//RT), and (7.63)10/sup 12/ exp(-(207.9)10/sup 3//RT). The activation energies for the oxidation of palladium powder and the reduction of palladium oxide are 74.1 and 207.9 kJ mol/sup -1/, respectively.

• Research Organization: University of California Davis, Davis, CA
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 5416014
• Journal Information: Metall. Trans., B; (United States), Journal Name: Metall. Trans., B; (United States) Vol. 14B:1; ISSN MTTBC
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360105* -- Metals & Alloys-- Corrosion & Erosion
ACTIVATION ENERGY
CHALCOGENIDES
CHEMICAL REACTIONS
ELEMENTS
ENERGY
FABRICATION
HIGH TEMPERATURE
KINETICS
METALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PALLADIUM
PALLADIUM COMPOUNDS
PALLADIUM OXIDES
PLATINUM METALS
POWDERS
REACTION KINETICS
REDUCTION
SINTERING
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS