Study on Photosensitized Oxidative Desulfurization of Dibenzothiophene by Riboflavin

Chem. J. Chinese Universities ›› 2011, Vol. 32 ›› Issue (5): 1118.

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Study on Photosensitized Oxidative Desulfurization of Dibenzothiophene by Riboflavin

ZHANG Juan, ZHAO Di-Shun*, YANG Jie, YANG Li-Yan

School of Chemistry and Pharmaceutical Engineering, Hebei University of Science and Technology, Shijiazhuang 050018, China

Received:2010-11-17 Revised:2011-02-27 Online:2011-05-10 Published:2011-04-11
Contact: ZHAO Di-Shun E-mail:dishunzhao@yahoo.com.cn
Supported by:
国家自然科学基金(批准号: 20276015)和河北省自然科学基金(批准号: 203364)资助.

Abstract

Abstract: Photosensitized oxidative desulfurization of dibenzothiophene（DBT） in n-octane/water extraction system was studied with riboflavin as photosensitizer and O2 in air as oxidant. A 15W UV lamp was used as the light source for irradiation and air was introduced by a gas pump for supplying O2. The result showed DBT was photooxidized successfully. The optimal reaction condition is, riboflavin concentration at 20mg/L and the air flow a t 80～100mL /min. Under optimal condition, the removal rario of DBT is up to 60% for 2 hours. Riboflavin sensitized DBT by 1O2 mechanism, the kinetics of photosensitized oxidation of DBT is fist-order.

Key words: riboflavin, dibenzothiophene, photooxidation

CLC Number:

O643

TrendMD:

ZHANG Juan, ZHAO Di-Shun*, YANG Jie, YANG Li-Yan. Study on Photosensitized Oxidative Desulfurization of Dibenzothiophene by Riboflavin[J]. Chem. J. Chinese Universities, 2011, 32(5): 1118.

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Study on Photosensitized Oxidative Desulfurization of Dibenzothiophene by Riboflavin

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