高等学校化学学报 ›› 2011, Vol. 32 ›› Issue (5): 1118.

• 研究论文 • 上一篇    下一篇

核黄素光敏化氧化二苯并噻吩的研究

张娟, 赵地顺, 杨洁, 杨立彦   

  1. 河北科技大学化学与制药工程学院, 石家庄 050018
  • 收稿日期:2010-11-17 修回日期:2011-02-27 出版日期:2011-05-10 发布日期:2011-04-11
  • 通讯作者: 赵地顺 E-mail:dishunzhao@yahoo.com.cn
  • 基金资助:

    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.

Study on Photosensitized Oxidative Desulfurization of Dibenzothiophene by Riboflavin

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

  1. 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.

摘要: 以二苯并噻吩的正辛烷溶液模拟柴油,以水为溶剂,以空气中的O2为氧化剂,以核黄素为光敏剂,研究了二苯并噻吩15W紫外杀菌灯照射下的光化学氧化。实验结果表明,反应的最佳条件为:核黄素浓度为20 mg/L,空气流速为80~100 mL/min,在最佳条件下反应2 h,DBT脱硫率为60%。核黄素是通过1O2历程来敏化DBT的,该条件下的脱硫反应符合一级反应的动力学特征。

关键词: 核黄素, 二苯并噻吩, 光氧化

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

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