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Mn-Catalyzed Oxidation of Multiple-Ringed Aromatics
Mn-Catalyzed Oxidation of Multiple-Ringed Aromatics
- Source :
- Biological Engineering Faculty Publications
- Publication Year :
- 1995
- Publisher :
- Mary Ann Liebert Inc, 1995.
-
Abstract
- The role of manganese (Mn) oxides in catalyzing the abiotic oxidation of polynuclear aromatic compounds (PNAs) has been investigated by monitoring the oxidation of dihydrodiol and dione PNAs and corresponding reduction of Mn in an aqueous environment. 1,4-, 1,3-, and 2,3-naphthalenediol, 1,4-naphthoquinone, and l,4-dihydroxy-9,10-anthracenedione (Quinizarin) were oxidized in an oxic, aqueous environment, where each of these organic compounds is soluble in water, except Quinizarin. A mathematical model is presented, which describes the redox reactions, and suggests that electron transfer/organic release from the oxide surface is rate limiting with the reaction apparently proceeding through a free-radical formation. Results indicate significant oxidation of the organics, that the oxidation of the diols is kinetically more favorable than that of the dione, and that lower molecular weight PNAs containing diol and dione functional groups are susceptible to abiotic-catalyzed oxidation, thereby suggesting that progressively more complex PNA molecules may also be susceptible to oxidation.
- Subjects :
- Reaction mechanism
Aqueous solution
Bioresource and Agricultural Engineering
aromatics
Diol
Oxide
Reaction intermediate
Toxicology
Pollution
Medicinal chemistry
Redox
Mn
Quinone
chemistry.chemical_compound
Electron transfer
chemistry
Biological Engineering
catalyzed oxidation
Organic chemistry
multiple-ringed
UWRL
Waste Management and Disposal
Subjects
Details
- ISSN :
- 08825696
- Volume :
- 12
- Database :
- OpenAIRE
- Journal :
- Hazardous Waste and Hazardous Materials
- Accession number :
- edsair.doi.dedup.....4d9d070d4fb8b76e703e2f24cd52c9de
- Full Text :
- https://doi.org/10.1089/hwm.1995.12.243