催化学报

催化学报 ›› 2007, Vol. 28 ›› Issue (5): 395-397.

• 研究快讯 • 上一篇    下一篇

ZnFe0.25Al1.75O4催化剂在苯酚催化湿式氧化中的活性和稳定性

徐爱华1,2,鲁晓阳1,2,杨民1,杜鸿章1,孙承林1   

  1. 1 中国科学院大连化学物理研究所, 辽宁大连 116023; 2 中国科学院研究生院, 北京 100049
  • 收稿日期:2007-05-25 出版日期:2007-05-25 发布日期:2011-04-28

Activity and Stability of ZnFe0.25Al1.75O4 Catalyst in Catalytic Wet Air Oxidation of Phenol

XU Aihua1,2, LU Xiaoyang1,2, YANG Min1, DU Hongzhang1, SUN Chenglin1*   

  1. 1 Dalian Institute of Chemical Physics, The Chinese Academy of Sciences, Dalian 116023, Liaoning, China; 2 Graduate University of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2007-05-25 Online:2007-05-25 Published:2011-04-28

PDF

845

被引次数

17

摘要： 利用溶胶-凝胶法制备了ZnFe0.25Al1.75O4尖晶石复合氧化物催化剂,并将其用于苯酚催化湿式氧化反应. 结果表明,这种催化剂对苯酚降解有较好的催化活性和稳定性. 连续反应5次后,苯酚转化率为100%, COD去除率为88.7%. 反应过程中,铁离子的溶出量先增加后减小,最终的出水金属离子浓度很低. 第5次反应后的出水铁离子浓度为2.15 mg/L, 锌离子浓度为1.53 mg/L.

关键词: 尖晶石, 苯酚, 催化湿式空气氧化, 铁离子, 溶出

Abstract: The ZnFe0.25Al1.75O4 spinel type catalyst prepared by the sol-gel method was tested for catalytic wet air oxidation of phenol. High activity and stability were obtained for the catalyst. After five successive reactions, there were still 100% of phenol conversion and 88.7% of COD removal. During the phenol degradation, the returning of leached iron to the catalyst surface was observed, and as a result the amount of iron leaching in the final effluent was very low. After the fifth reaction run, the amount of iron leaching was 2.15 mg/L, and the zinc leaching was 1.53 mg/L.

Key words: spinel, phenol, catalytic wet air oxidation, iron ion, leaching