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001-es BibID:	BIBFORM095832
Első szerző:	Fábián István (vegyész)
Cím:	Reactive intermediates in aqueous ozone decomposition : a mechanistic approach / István Fábián
Dátum:	2006
ISSN:	0033-4545 1365-3075
Megjegyzések:	This paper provides a detailed account of recent developments in the mechanistic interpretation of aqueous ozone decomposition. Experimental complications with collecting reliable kinetic information for this system are illustrated via a few examples. Classical and comprehensive data treatment methods are compared, and an advanced kinetic model is presented on the basis of simultaneous evaluation of about 60 kinetic traces recorded at 260, 430, and 600 nm. These are the wavelengths of the absorbance maxima of O3, O3-, and CO3-, respectively. The model is used to explore specific features of the initiation sequence, the role of reactive intermediates, and the carbonate ion inhibition. It is also demonstrated how a complex kinetic model can be validated by studying the system under specific experimental conditions.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban folyóiratcikk ozone aqueous ozone reaction mechanism aqueous ozone decomposition kinetic models
Megjelenés:	Pure and Applied Chemistry. - 78 : 8 (2006), p. 1559-1570. -
Pályázati támogatás:	T042755 OTKA
Internet cím:	Szerző által megadott URL DOI Intézményi repozitóriumban (DEA) tárolt változat
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001-es BibID:	BIBFORM016462
Első szerző:	Fábián István (vegyész)
Cím:	Light-induced multistep redox reactions : The diode-array spectrophotometer as a photoreactor / István Fábián, Gábor Lente
Dátum:	2010
ISSN:	0033-4545
Megjegyzések:	The light source of a photometer may induce chemical reactions in photosensitive reactive systems. Diode-array spectrophotometers are particularly suitable for producing such phenomena. This paper provides an overview on how this equipment can be used as a photoreactor. The principles of various techniques to control the intensity and spectral region of the illuminating light are discussed in detail. It will be shown that the quantum yields of various photochemically induced redox reactions can be determined by exploiting specific features of diode-array spectrophotometers. Kinetic coupling between primary photochemical and secondary thermally activated reaction steps are utilized to explore intimate details of composite redox reactions. Key aspects of the method applied are demonstrated via the photoreactions of 2,6-dichloro-1,4-benzoquinone (DCQ), the photoinduced autoxidation of S(IV) and a photochemically activated redox reaction of the chlorate ion.
Tárgyszavak:	Természettudományok Kémiai tudományok idegen nyelvű folyóiratközlemény külföldi lapban autoxidation chlorate ion diode-array spectrophotometer photoinitiation quantum yield spectrophotometry sulfur(IV) soluble iron(iii) porphyrin aqueous autoxidation sulfur(iv) oxides hydrogen-peroxide oxidation kinetics oxygen water ion photochemistry
Megjelenés:	Pure and Applied Chemistry. - 82 : 10 (2010), p. 1957-1973. -
További szerzők:	Lente Gábor (1973-) (vegyész)
Internet cím:	DOI Intézményi repozitóriumban (DEA) tárolt változat
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