Kinetic study of the catalytic oxidation of CO over Nafion-supported rhodium, ruthenium, and platinum

Journal Article · Thu Sep 25 04:00:00 EDT 1986 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100411a021· OSTI ID:5059206

Mattera, Jr, V D; Barnes, D M; Chaudhuri, S N; Risen, Jr, W M; Gonzalez, R D

The Rh, Ru, and Pt ionomers of perfluorocarbonsulfonic acid (Nafion or PFSA) polymers have been formed and have been reduced to investigate the formation of metal particles within the ionic domains of the materials. The particle size distributions are peaked in the 25-40-A range postulated for these domains and are consistent with exertion by the ionomer of morphological control over the growth of transition-metal particles. The reduced ionomers catalyze the CO oxidation with the activity sequence Ru > Rh > Pt. Diffusion limitations occur over the Rh and Ru, but not the Pt, ionomer catalysts. Turnover frequencies for the formation of CO/sub 2/ by oxidation of CO are reported as a function of temperature.

• Research Organization: Brown Univ., Providence, RI
• OSTI ID: 5059206
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 90:20; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
330702 -- Emission Control-- Carbon Monoxide
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
500200 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (-1989)
54 ENVIRONMENTAL SCIENCES
CARBON COMPOUNDS
CARBON MONOXIDE
CARBON OXIDES
CATALYSIS
CATALYST SUPPORTS
CATALYTIC EFFECTS
CHALCOGENIDES
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DATA
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
KINETICS
METALS
NUMERICAL DATA
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLE SIZE
PLATINUM
PLATINUM METALS
REACTION KINETICS
RHODIUM
RUTHENIUM
SIZE
TEMPERATURE DEPENDENCE
TRANSITION ELEMENTS