Reaction kinetics in porous electrocatalysts

Journal Article · Wed Nov 01 04:00:00 EST 1978 · AIChE J.; (United States)

DOI:https://doi.org/10.1002/aic.690240626· OSTI ID:6684195

Sakellaropoulos, G P; Langer, S H

In a theoretical and experimental study of the effect of pore diffusion on the electrode kinetics of non-first-order reactions (e.g., hydrocarbon fuel cell reactions), a simple pore model was used successfully to describe the reaction in the pores of a partially wettable electrocatalyst. Experiments on the electrogenerative hydrogenation of gaseous olefins (ethylene through butylene) and of liquid benzene on polytetrafluoroethylene-bonded porous electrodes, activated with 9 mg/sq cm platinum or palladium black, were in good agreement with calculations by the model and showed that partially wettable porous catalytic electrodes behave kinetically similar to conventional catalysts when pore diffusion is slow. Kinetic studies on porous electrocatalysts can, therefore, be meaningful for catalyst characterization and for the design of electrochemical reactors.

• Research Organization: Univ. of Wisconsin
• OSTI ID: 6684195
• Journal Information: AIChE J.; (United States), Journal Name: AIChE J.; (United States) Vol. 24:6; ISSN AICEA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301 -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
400400* -- Electrochemistry
ALKENES
AROMATICS
BENZENE
BUTENES
CATALYSTS
CHEMICAL REACTIONS
CHEMICAL REACTORS
COMPARATIVE EVALUATIONS
DESIGN
DIFFUSION
ELECTROCATALYSTS
ELECTRODES
ETHYLENE
HYDROCARBONS
HYDROGENATION
KINETICS
ORGANIC COMPOUNDS
POROSITY
PROPYLENE
REACTION KINETICS