ZrO_2负载12-磷钨酸催化螺[芴-9,9'-氧杂蒽]氧化溴化反应  

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

作　　者：任保轶[1] 赵阳[1] 李响[1] 冉凡鹏[1] 金晓丹[1] 

机构地区：[1]沈阳化工大学应用化学学院,沈阳110142

出　　处：《应用化学》2013年第11期1299-1303,共5页Chinese Journal of Applied Chemistry

基　　金：辽宁省教育厅科学技术研究项目基金(2009B146)

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。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.

关 键 词：磷钨酸 二氧化锆 氧化溴化 螺[芴-氧杂蒽] 

分 类 号：O643[理学—物理化学]