- Efficient oxidation of polycyclic aromatic hydrocarbons with H 2O2 catalyzed by 5,10,15-triarylcorrolatoiron (IV) chloride in ionic liquids
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A simple and efficient oxidative system has been developed for the oxidation of polycyclic aromatic hydrocarbons with H2O2 catalyzed by 5,10,15-triarylcorrolatoiron (IV) chloride in mixed reaction media using imidazolium ionic liquids and organic solvents. The coordination effects of different organic solvents as well as anions of ionic liquids on the oxidation reactions have been examined.
- Kumari, Pratibha,Nagpal, Ritika,Chauhan, Shive M.S.
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- Photocatalytic degradation of polycyclic aromatic hydrocarbons in GaN:ZnO solid solution-assisted process: Direct hole oxidation mechanism
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GaN:ZnO exhibits excellent activity for the photodegradation of PAHs, and the activity can be obviously improved by loading Pt. The degradation of PAHs in the system of GaN:ZnO is induced by the formation of holes. The holes generated then interact with PAHs to produce PAHs+, which is active enough to react with O2.
- Kou, Jiahui,Li, Zhaosheng,Guo, Yong,Gao, Jun,Yang, Ming,Zou, Zhigang
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experimental part
p. 48 - 54
(2010/10/01)
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- Photophysics and Photochemistry of Nitroanthracenes. Part 2. Primary Process in the Photochemical Reaction of 9-Nitroanthracene studied by Steady-state Photolysis and Laser Photolysis
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From measurements of phosphorescence and triplet-triplet absorption spectra of the lowest excited triplet ??* state of 9-nitroanthracene (NA) together with the absorption spectrum of 9-anthryloxy radical, it is concluded that photolysis of 9-nitroanthracene gives rise to the nitro -> nitrite rearrangement for a higher excited triplet state of n?* character, followed by the cleavage of 9-anthryl nitrite to 9-anthryloxy radical and nitrogen(II) oxide, yielding 9-anthrol (and anthrone), 10,10'-bianthrone and 9-nitrosoanthrone in ethanol; and 10,10'-bianthrone and 9-nitrosoanthrone in benzene.Hence, the primary process in the photochemical reaction of NA is essentially identical with those of 9-benzoyl-10-nitroanthracene and 9-cyano-10-nitroanthracene except that no 10,10'-bianthrone derivatives are formed.
- Hamanoue, Kumao,Nakayama, Toshihiro,Kajiwara, Kanji,Yamanaka, Shigenobu,Ushida, Kiminori
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p. 3145 - 3152
(2007/10/02)
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- Benzoquinones and Related Compounds. Part 4. Thermolysis of the Diels-Alder Adduct of 2-Acetyl-5,6-dichloro-1,4-benzoquinone and Cyclopentadiene: Evidence for a Partial Retro-diene Reaction
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Addition of chlorine to (2-methyl-1,3-dioxolan-2-yl)-1,4-benzoquinone occurs at the unsubstituted double bond.Subsequent enolisation and cleavage of the acetal affords 2-acetyl-5,6-dichlorohydroquinone in 50percent overall yield.Oxidation of this gives the corresponding 1,4-benzoquinone which with cyclopentadiene yields, predominantly, the 1 : 1 Diels-Alder adduct (6) by endo-addition to the 2,3-double bond.Thermolysis of this adduct in benzene results in disproportionation to cyclopentadiene and the spiro-acetal (13); thermolysis in acetic acid also yields (13), but the major product is the dihydrobenzofuran (14), an isomer of the Diels-Alder adduct.Mechanisms for the formation of these products are discussed.
- Beddoes, Roy L.,Bruce, J. Malcolm,Finch, Harry,Heelam, Leslie M. J.,Hunt, Ian D.,Mills, Owen S.
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p. 2670 - 2676
(2007/10/02)
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