Photoinduced oxidation of benzhydrol over lanthana modified sol-gel titania

Lanthana modified sol-gel titania is prepared through particulate sol-gel route and the physico-chemical characterizations of the prepared systems were done using X-Ray diffration, EDX, BET surface area-pore volume measurements and TG-DTG analysis. Benzophenone was observed to be the sole product in...

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Veröffentlicht in:	Journal of sol-gel science and technology 2007-05, Vol.42 (2), p.101-105
Hauptverfasser:	SHALI, N. B, SUGUNAN, S
Format:	Artikel
Sprache:	eng
Schlagworte:	Acetonitrile Catalysis Catalysts Chemistry Colloidal gels. Colloidal sols Colloidal state and disperse state Exact sciences and technology General and physical chemistry Lanthanum oxides Organic chemistry Oxidation Photochemistry Physical chemistry of induced reactions (with radiations, particles and ultrasonics) Sol-gel processes Theory of reactions, general kinetics. Catalysis. Nomenclature, chemical documentation, computer chemistry Titanium dioxide
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Zusammenfassung:	Lanthana modified sol-gel titania is prepared through particulate sol-gel route and the physico-chemical characterizations of the prepared systems were done using X-Ray diffration, EDX, BET surface area-pore volume measurements and TG-DTG analysis. Benzophenone was observed to be the sole product in the TiO2 photocatalyzed oxidation of benzhydrol in oxygen purged acetonitrile. The influence of various parameters, like irradiation time, amount of catalyst, concentration of the catalyst and other factors on the photocatalytic oxidation has been investigated. The proposed mechanism envisages the involvement of a superoxide radical anion.
ISSN:	0928-0707 1573-4846
DOI:	10.1007/s10971-006-1524-4