Process for light-driven hydrocarbon oxidation at ambient temper

Details Process for light-driven hydrocarbon oxidation at ambient temper Process for light-driven hydrocarbon oxidation at ambient temper

1989-09-26

1990-04-17

Niebling, John F.

Chemistry: electrical and wave energy

Processes and products

Processes of treating materials by wave energy

20415761, 2041579, 20415793, B01J 1908

Patent

active

049177842

ABSTRACT:
A photochemical reaction for the oxidation of hydrocarbons uses molecular oxygen as the oxidant. A reductive photoredox cycle that uses a tin(IV)- or antimony(V)-porphyrin photosensitizer generates the reducing equivalents required to activate oxygen. This artificial photosynthesis system drives a catalytic cycle, which mimics the cytochrome P.sub.450 reaction, to oxidize hydrocarbons. An iron(III)- or manganese(III)-porphyrin is used as the hydrocarbon-oxidation catalyst. Methylviologen can be used as a redox relay molecule to provide for electron-transfer from the reduced photosensitizer to the Fe or Mn porphyrin. The system is long-lived and may be used in photo-initiated spectroscopic studies of the reaction to determine reaction rates and intermediates.

REFERENCES:
patent: 4427511 (1984-01-01), Wohlgeniuth
patent: 4568435 (1986-02-01), Shelnutt

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