Acta Chimica Sinica ›› 2009, Vol. 67 ›› Issue (16): 1839-1842. Previous Articles     Next Articles

Original Articles

铈的引入对负载钯阳极氧化膜不锈钢丝网催化剂结构和性能的影响

陈 敏*,a 宋 萃a 汪丽娜b 张 婷a 郑小明a

  

  1. (a浙江大学化学系 杭州 310028)
    (b浙江理工大学先进纺织材料与制备技术教育部重点实验室 杭州 310018)

  • 投稿日期:2008-12-11 修回日期:2009-03-11 发布日期:2009-08-28
  • 通讯作者: 陈敏

Effects of Adding Cerium on the Structures and Properties of Supported Pd/Stainless Steel Catalyst with Porous Oxides Film

Chen, Min*,a Song, Cui a Wang, Lina b Zhang, Ting a Zheng, Xiaoming a   

  1. (a Department of Chemistry, Zhejiang University, Hangzhou 310028)
    (b Key Laboratory of Advanced Textile Materials and Manufacturing Technology, Ministry of Education,
    Zhejiang Sci-Tech University, Hangzhou 310018)
  • Received:2008-12-11 Revised:2009-03-11 Published:2009-08-28
  • Contact: Chen, Min

A new type of 0.75%Ce-0.5%Pd/stainless steel wire mesh (SSWM) catalyst was prepared, and characterized by means of SEM and TPR techniques. The catalytic properties for deep oxidation of representative volatile organic compounds such as toluene, acetone and ethyl acetate were investigated with and without addition of cerium. The results show that a porous oxides film was presented on the surface of SSWM by anodic oxidation method and which results into a strong interaction between Pd and CeO2. After addition of cerium in the supported Pd/SSWM catalyst, a sponge-like and flattering morphological variation was appeared on the oxide film surfaces. This typical structure is crucial for the fastness of Pd active sites. The complete oxidation temperature for toluene, acetone and ethyl acetate can be lowered to 200, 240 and 260 ℃, respectively. This result was related with the adding of CeO2 by which caused the morphological variation over oxides film.

Key words: anodic oxidation method, stainless steel, cerium