催化学报

催化学报 ›› 2011, Vol. 32 ›› Issue (8): 1387-1392.DOI: 10.3724/SP.J.1088.2011.10334

• 研究论文 • 上一篇    下一篇

担载 CuO 基催化剂上 2,4-二氯酚的有效氧化降解

李京京1, 刘兴海1,2, 石雷1,*, 孙琪1, 周永刚2, 徐健峰2, 单作刚2, 王福冬2   

  1. 1辽宁师范大学功能材料化学研究所, 辽宁大连 116029; 2盘锦市疾病预防控制中心, 辽宁盘锦 124010
  • 收稿日期:2011-03-25 修回日期:2011-05-05 出版日期:2011-08-05 发布日期:2014-12-26

Efficient Oxidative Degradation of 2,4-Dichlorophenol over Supported CuO-Based Catalysts

LI Jingjing1, LIU Xinghai1,2, SHI Lei1,*, SUN Qi1, ZHOU Yonggang2, XU Jianfeng 2, SHAN Zuogang2, WANG Fudong2   

  1. 1Institute of Chemistry for Functionalized Materials, Liaoning Normal University, Dalian 116029, Liaoning, China; 2Panjin Center for Disease Control and Prevention, Panjin 124010, Liaoning, China
  • Received:2011-03-25 Revised:2011-05-05 Online:2011-08-05 Published:2014-12-26

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摘要： 研究了 2,4-二氯酚的催化氧化降解. 结果表明, CuO/γ-Al2O3 催化剂表现出较高的活性, 且碱土金属氧化物助剂的添加可进一步显著提高 2,4-二氯酚氯离子的释放率, 其中以 SrO 的促进作用最强, 该催化剂循环使用 3 次, 2,4-二氯酚转化率及氯离子的释放率均维持 100%. X 射线衍射和 NH3 程序升温脱附结果表明, 催化剂上 CuO 粒子分散度高并且酸中心数少有利于 2,4-二氯酚的氧化降解. 提出了 2,4-二氯酚催化氧化降解可能的反应途径.

关键词: 氧化铜, 氧化铝, 负载型催化剂, 碱土金属氧化物, 2,4-二氯酚, 氧化降解

Abstract: The catalytic oxidative degradation of 2,4-dichlorophenol (2,4-DCP) was studied. The results indicated that CuO/γ-Al2O3 exhibited high activity for the reaction. Adding alkaline-earth metal oxides into CuO/γ-Al2O3 improved the liberation rate of chloride ion from 2,4-DCP remarkably and SrO was the most efficient. The 2,4-DCP conversion and the liberation rate of chloride ion reached 100% when the CuO/γ-Al2O3-SrO catalyst was used 3 times. The results of X-ray diffraction and the temperature-programmed-desorption of ammonia indicated that the catalyst with good dispersion of CuO particles and a less amount of acid sites was favorable for the efficient oxidative degradation of 2,4-DCP. A probable pathway of the oxidative degradation for 2,4-DCP over the copper-based catalyst was suggested.

Key words: copper oxide, aluminium oxide, supported catalyst, alkaline-earth metal oxides, 2,4-dichlorophenol, oxidative degradation