Fine tuning of the catalytic effect of a metal-free porphyrin on the homogeneous oxygen reduction |
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| Authors: | Trojánek Antonín Langmaier Jan Šebera Jakub Záliš Stanislav Barbe Jean-Michel Girault Hubert H Samec Zdeněk |
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| Institution: | J. Heyrovsky Institute of Physical Chemistry of ASCR, v.v.i, Dolej?kova 3, 182 23 Prague 8, Czech Republic. |
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| Abstract: | The catalytic effect of tetraphenylporphyrin on the oxygen reduction with ferrocene in 1,2-dichloroethane can be finely tuned by varying the molar ratio of the acid to the catalyst present in the solution. The mechanism involves binding of molecular oxygen to the protonated free porphyrin base, in competition with ion pairing between the protonated base and the acid anion present. |
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