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Photocatalytic oxidation kinetics of thiophene in n-octane/water extraction system was studied with fluorine and ferric ion codoped nano-TiO_2(nano-F~-/Fe~(3+)/TiO_2) powders used as the photocatalyst.Effects of initial concentration of thiophene and additional dosage of F~-/Fe~(3+)/TiO_2 on the reaction rate constant and half-life were investigated.The results showed that the appropriately added dosage of F~-/Fe~(3+)/TiO_2 was 0.1 g in the 100-mL reaction system and the photooxidative kinetics of thiophene in the presence of F~-/Fe~(3+)/TiO_2 catalyst was of first-order with a rate constant of 0.6508 h~(-1) and a half-life of 1.0651 h.The desulfurization rate of thiophene was 98.1%in 5 h and the sulfur content could be reduced from 800 ppm to 15 ppm.The reaction rate constant increased with a decreasing initial concentration of thiophene.
Photocatalytic oxidation kinetics of thiophene in n-octane / water extraction system was studied with fluorine and ferric ion codoped nano-TiO 2 (nano-F ~ - / Fe 3+ / TiO 2) powders used as the photocatalyst. Effects of initial concentration of thiophene and additional dosage of F ~ - / Fe ~ (3 +) / TiO_2 on the reaction rate constant and half-life were investigated. The results showed that the appropriately added dosage of F ~ - / Fe ~ (3 +) / TiO 2 was 0.1 g in the 100-mL reaction system and the photooxidative kinetics of thiophene in the presence of F ~ - / Fe ~ (3 +) / TiO_2 was was first-order with a rate constant of 0.6508 h -1 ) and a half-life of 1.0651 h. The desulfurization rate of thiophene was 98.1% in 5 h and the sulfur content could be reduced from 800 ppm to 15 ppm. The reaction rate constant increased with a decreasing initial concentration of thiophene.