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Photocatalysis of ethanol oxidation by tetrachloroferrate(III) supported on Dowex 2‐X8
Author(s) -
Schembri Laura,
Hoggard Patrick E.
Publication year - 2014
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.3229
Subject(s) - chemistry , acetaldehyde , ethanol , photodissociation , photochemistry , toluene , chlorine , yield (engineering) , inorganic chemistry , photocatalysis , oxygen , ion exchange , catalysis , irradiation , reaction mechanism , ion , nuclear chemistry , organic chemistry , materials science , physics , nuclear physics , metallurgy
FeCl 4 − heterogenized on a Dowex 2‐X8 anion exchange resin catalyzes the photooxidation of ethanol to acetaldehyde under visible and near‐UV irradiation (>345 nm). The rate of reaction is proportional to the oxygen partial pressure up to 1 atm. Oxidation is suggested to occur through the formation of 1‐hydroxyethylhydroperoxide, initiated by the photodissociation of a chlorine atom. The hydroperoxide re‐oxidizes the iron(II) species, both the oxidation and reduction steps producing acetaldehyde. This mechanism is consistent with the increases in yield with ethanol concentration in ethanol–toluene mixtures towards an asymptotic limit. Copyright © 2014 John Wiley & Sons, Ltd.