应用化学

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ZrO2负载12-磷钨酸催化螺[芴-9,9′-氧杂蒽]氧化溴化反应

任保轶*,赵阳,李响,冉凡鹏,金晓丹   

  1. (沈阳化工大学应用化学学院 沈阳 110142)
  • 收稿日期:2013-02-19 修回日期:2013-04-04 出版日期:2013-11-10 发布日期:2013-11-10
  • 通讯作者: 任保轶,讲师; Tel:024-89383302; Fax:024-89387219; E-mail:baoyir@126.com; 研究方向:有机半导体
  • 基金资助:
    辽宁省教育厅科学技术研究项目基金(2009B146)

Oxybromination of Spiro[fluorene-9,9′-xanthene] over 12-Tungstophosphoric Acid Supported on Zirconia

REN Baoyi*, ZHAO Yang, LI Xiang, RAN Fanpeng, JIN Xiaodan   

  1. (College of Applied Chemistry,Shenyang University of Chemical Technology,Shenyang 110142,China)
  • Received:2013-02-19 Revised:2013-04-04 Published:2013-11-10 Online:2013-11-10

摘要: 研究了12-磷钨酸(TPA)负载量和活化温度对ZrO2固载TPA催化剂结构及催化螺[芴-9,9′-氧杂蒽](SFX)氧化溴化反应的影响。 X射线衍射和傅里叶变换红外光谱分析表明,增加TPA负载量和提高活化温度,使载体ZrO2结构的单斜相向四方相转变。 TPA质量分数为15%的催化剂样品经300 ℃活化后,具有稳定而良好的催化活性。 1H NMR表明,溴代产物中溴代位置在SFX的2位。

关键词: 磷钨酸, 二氧化锆, 氧化溴化, 螺[芴-氧杂蒽]

Abstract: A catalyst for the oxybromination of spiro[fluorene-9,9′-xanthene], 12-tungstophosphoric acid(TPA) supported on zirconia, was prepared. Effects of TPA loading and activation temperature on the structure of the catalyst and the catalytic performance for oxybromination of spiro[fluorine-9,9′-xanthene](SFX) have been investigated. The results of XRD and FTIR analysis show that the monoclinic zirconia transformed to tetragonal phase with the increase of TPA loading and calcinations temperature. A preliminary study on catalysts with 15%(mass fraction) TPA indicated that calcination at 300 ℃ could greatly enhance the stability of catalyst. The bromination position of the products was confirmed in the position of 2 of SFX from 1H NMR.

Key words: tungstophosphoric acid, zirconia, oxybromination, spiro[fluorene-xanthene]

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