Electrocatalysis of the reduction of O[sub 2] to H[sub 2]O by tetraruthenated cobalt meso-tetrakis(4-pyridyl)porphyrin adsorbed on graphite electrodes

Journal Article · Tue Nov 24 23:00:00 EST 1992 · Inorganic Chemistry; (United States)

OSTI ID:6900325

Shi, Chunnian; Anson, F C ^[1]

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1. California Inst. of Technology, Pasadena (United States)

Coordination of Ru(NH[sub 3])[sub 5] groups to the four pyridine sites in cobalt meso-tetrakis(4-pyridyl)porphyrin adsorbed on pyrolytic graphite electrodes produces the tetraruthenated complex which acts as a catalyst for the four-electron reduction of O[sub 2] to H[sub 2]O. The adsorbed catalyst, prepared by this heterogeneous coordination reaction, yields higher catalytic reduction rates than those obtained previously when the same catalyst was prepared within Nafion coatings on electrodes. The coordination chemistry used in the preparation of the adsorbed catalyst and its behavior as an electrocatalyst are described.

• OSTI ID: 6900325
• Journal Information: Inorganic Chemistry; (United States), Journal Name: Inorganic Chemistry; (United States) Vol. 31:24; ISSN 0020-1669; ISSN INOCAJ
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400400* -- Electrochemistry
CATALYSIS
CATALYTIC EFFECTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
CHEMISTRY
COBALT COMPOUNDS
DATA
ELECTROCHEMISTRY
ELECTRODES
ELEMENTS
EXPERIMENTAL DATA
INFORMATION
KINETICS
NONMETALS
NUMERICAL DATA
OXYGEN
REACTION KINETICS
REDUCTION
REFRACTORY METAL COMPOUNDS
RUTHENIUM COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
VOLTAMETRY