高等学校化学学报

高等学校化学学报 ›› 2005, Vol. 26 ›› Issue (5): 897.

• 研究论文 • 上一篇    下一篇

CeO2掺杂RuO2/γ-Al2O3催化剂结构与湿式氧化降解苯酚的活性研究

杨少霞1, 冯玉杰2, 万家峰2, 蔡伟民2, 祝万鹏1, 蒋展鹏1   

  1. 1. 清华大学环境科学与工程系, 北京100084;
    2. 哈尔滨工业大学市政环境学院, 哈尔滨150001
  • 收稿日期:2004-07-21 出版日期:2005-05-10 发布日期:2005-05-10
  • 通讯作者: 杨少霞(1973年出生),女,博士,从事环境污染与防治等研究.E-mail:sx-yang@mail.tsinghua.edu.cn E-mail:sx-yang@mail.tsinghua.edu.cn
  • 基金资助:

    国家高技术研究发展规划“八六三”计划项目(批准号:2000AA601260);中国博士后自然科学基金资助.

Structure and Activity of RuO2/γ-Al2O3 Catalyst Doped with CeO2 in Wet Air Oxidation Degradation of Phenol

YANG Shao-Xia1, FENG Yu-Jie2, WAN Jia-Feng2, CAI Wei-Min ZHU Wan-Peng2, JIANG Zhan-Peng1   

  1. 1. Department of Environmental Science & Engineering, Tsinghua University, Beijing 100084, China;
    2. School of Municipal & Environmental Engineering, Harbin Institute of Technology, Harbin 150001, China
  • Received:2004-07-21 Online:2005-05-10 Published:2005-05-10

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摘要： 采用浸渍法制备了RuO2/γ-Al2O3和RuO2-CeO2/γ-Al2O3催化剂,利用XRD,XPS和ESR分析了催化剂的结构,并研究了湿式氧化降解苯酚的活性.结果表明,两种催化剂表面RuO2均有良好的分散性,并且催化剂表面存在氧空位和化学吸附氧,CeO2的掺杂使催化剂表面氧空位和化学吸附氧数量增加.两种催化剂对湿式氧化降解苯酚具有良好的催化活性,当苯酚质量浓度为4200mg/L,在150℃和3MPa下,RuO2/γ-Al2O3催化剂湿式氧化降解苯酚反应150min后,苯酚全部被去除,RuO2-CeO2/γ-Al2O3催化剂反应60min后,苯酚的去除率为96%.

关键词: 湿式氧化, 苯酚, Ru催化剂, CeO2, 废水处理

Abstract: In this paper, RuO2/γ-Al2O3 and RuO2-CeO2/γ-Al2O3 catalysts were prepared by the impregnation method. The structure of the catalysts was investigated by XRD, XPS and ESR. The catalytic activity was studied in the wet air oxidation(WAO) of phenol. The results show that the dispersion of RuO2 particles is higher on RuO2-CeO2/γ-Al2O3 catalyst than that on RuO2/γ-Al2O3 catalyst. There were oxygen deficiencies and chemisorbed oxygen on the surface of the two catalysts. Moreover, the amount of them increased after the addition of CeO2 into RuO2/γ-Al2O3 catalyst. RuO2/γ-Al2O3 and RuO2-CeO2/γ-Al2O3 catalysts have a good activity in WAO of phenol. At a mass concentration 4 200 mg/L of phenol, 150 ℃ and 3 MPa, phenol was totally removed after 150 min over RuO2/γ-Al2O3 catalysts, and the phenol removal ratio was 96% after a 60 min reaction over RuO2-CeO2/γ-Al2O3 in WAO.

Key words: Wet air oxidation(WAO), Phenol, Ru catalyst, CeO2, Wastewater treatment

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