Direct Comparison of Electrochemical and Spectrochemical Kinetics for Catalytic Oxygen Reduction
We describe here a direct comparison of electrochemical and spectrochemical experiments to determine rates and selectivity of oxygen reduction catalyzed by iron 5,10,15,20-meso-tetraphenylporphyrin chloride. Strong agreement was found between the two methods suggesting the same mechanism is occurring under both conditions, with the same overall third order rate constant kcat = (1.1 ± 0.1) × 106 M-2 s-1. This report provides a rare example of characterization of a redox catalytic process by two common but very different methods. This work was supported as part of the Center for Molecular Electrocatalysis, an Energy Frontier Research Center funded by the U.S. Department of Energy, Office of Science, Basic Energy Sciences.
- Research Organization:
- Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC05-76RL01830
- OSTI ID:
- 1188942
- Report Number(s):
- PNNL-SA-102821; KC0307010
- Journal Information:
- Journal of the American Chemical Society, 136(36):12544-12547, Journal Name: Journal of the American Chemical Society, 136(36):12544-12547
- Country of Publication:
- United States
- Language:
- English
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