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Title: Process for light-driven hydrocarbon oxidation at ambient temperatures

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.

Inventors:
 [1]
  1. Tijeras, NM
Issue Date:
Research Org.:
AT & T CORP
OSTI Identifier:
867340
Patent Number(s):
4917784
Assignee:
United States of America as represented by United States (Washington, DC)
DOE Contract Number:  
AC04-76DP00789
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
process; light-driven; hydrocarbon; oxidation; ambient; temperatures; photochemical; reaction; hydrocarbons; molecular; oxygen; oxidant; reductive; photoredox; cycle; antimony; -porphyrin; photosensitizer; generates; reducing; equivalents; required; activate; artificial; photosynthesis; drives; catalytic; mimics; cytochrome; 450; oxidize; iron; iii; manganese; hydrocarbon-oxidation; catalyst; methylviologen; redox; relay; molecule; provide; electron-transfer; reduced; mn; porphyrin; long-lived; photo-initiated; spectroscopic; studies; determine; rates; intermediates; reaction rate; ambient temperature; chemical reaction; photochemical reaction; oxidation catalyst; reaction rates; ambient temperatures; molecular oxygen; spectroscopic studies; artificial photosynthesis; hydrocarbon oxidation; /204/

Citation Formats

Shelnutt, John A. Process for light-driven hydrocarbon oxidation at ambient temperatures. United States: N. p., 1990. Web.
Shelnutt, John A. Process for light-driven hydrocarbon oxidation at ambient temperatures. United States.
Shelnutt, John A. Mon . "Process for light-driven hydrocarbon oxidation at ambient temperatures". United States. https://www.osti.gov/servlets/purl/867340.
@article{osti_867340,
title = {Process for light-driven hydrocarbon oxidation at ambient temperatures},
author = {Shelnutt, John A},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1990},
month = {1}
}

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