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BiVO4/SBA-15的制备及其光催化氧化性能
作者:    陈政利     任铁强 
单位:(辽宁石油化工大学石化学院 辽宁 抚顺 113001) 
关键词:钒酸铋 SBA-15分子筛 催化剂 光催化活性 
分类号:TQ426.6
出版年,卷(期):页码:2019,47(7):0-0
DOI:
摘要:

 为提高BiVO4催化活性,以SBA-15为载体,通过后合成法制备了BiVO4/SBA-15介孔分子筛,通过X射线衍射、扫描电子显微镜、能量色散谱、N2吸附?脱附等方法对制备的样品进行了表征。结果表明:样品具有介孔孔道结构,BiVO4均匀分散于SBA-15分子筛表面。以苯乙烯制备苯甲醛为探针反应考察了制备条件对其活性的影响。结果表明:BiVO4水热时间为18 h,BiVO4负载量为15%,530 ℃焙烧2 h时,所制备的BiVO4/SBA-15在光催化氧化反应中具有较高的光催化活性,苯乙烯转化率达到82.86%,苯甲醛选择性达到59.62%。

  BiVO4/SBA-15 catalyst was prepared by a post-synthetic method with SBA-15 as a carrier. The catalysts were characterized by X-ray diffraction, scanning electron microscopy, energy dispersive spectroscopy, N2 adsorption?desorption. The results show that the samples have a mesoporous structure, and BiVO4 is evenly dispersed on the surface of SBA-15 molecular sieve. The preparation of formaldehyde as a probe reaction with styrene was carried out to investigate the effect of preparation condition on the activity. It is indicated that the catalyst hydrothermally treated for 18 h at 15% BiVO4 and roasted at 530 ℃ for 2 h has a high catalytic activity, and the styrene conversion rate and selectivity to benzaldehyde are 82.86% and 59.62%, respectively.

基金项目:
辽宁省教育厅基本科研项目(L2017LQN006)。
作者简介:
参考文献:

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