Solid-electrolyte-aided study of methane oxidation on polycrystalline silver

Journal Article · Wed Aug 01 00:00:00 EDT 1984 · J. Catal.; (United States)

DOI:https://doi.org/10.1016/0021-9517(84)90026-5· OSTI ID:6448668

Seimanides, S; Stoukides, M

The oxidation of methane on porous polycrystalline Ag films supported on yttria-stabilized zirconia was studied at temperatures between 450 and 600/sup 0/C and atmospheric total pressure. The technique of solid-electrolyte-potentiometry (SEP) was used to monitor the chemical potential of oxygen adsorbed on the catalyst. The kinetic and potentiometric results are consistent with an Eley-Rideal reaction model with adsorbed atomic oxygen reacting with gaseous methane. Equations are given for the rate of CH/sub 4/ combustion on a porous film that could absorb a total of 2.5 x 10/sup -6/ moles of O/sub 2/ and for the steady state oxygen activity. A simple mechanism is proposed which explains all the experimental observations.

• Research Organization: Tufts Univ., Medford, MA
• OSTI ID: 6448668
• Journal Information: J. Catal.; (United States), Journal Name: J. Catal.; (United States) Vol. 88:2; ISSN JCTLA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
ALKANES
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTIONS
DATA
ELEMENTS
EXPERIMENTAL DATA
FILMS
HYDROCARBONS
INFORMATION
METALS
METHANE
NUMERICAL DATA
ORGANIC COMPOUNDS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
SILVER
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
YTTRIUM COMPOUNDS
YTTRIUM OXIDES
ZIRCONIUM COMPOUNDS
ZIRCONIUM OXIDES