Wet Air Oxidation of Organic Wastewater Catalyzed by Doped Ceria

摘要：

The catalytic wet air oxidation (CWAO) of H acid and phenol was investigated in the presence of Cu or Fe doped CeO<,2> solid solutions, which were obtained by sol-gel method. The experiment results showed that the incorporation of Cu or Fe into the fluorite lattice of CeO<,2> strongly enhanced the oxidation activity of the catalyst. At 90℃ and 0.1 MPa, H acid conversion was 70％ for the Ce<,0.9>Fe<,0.1>O<,2-δ> and 60％ for the Ce<,0.9>Cu<,0.1>O<,2-δ> catalyst. For phenol removal, the conversion was 70％ for the Ce<,0.9>Cu <,0.1>O<,2-δ> catalyst, while for the Ce<,0.9>Fe<,0.1>O<,2- δ> the conversion was 30％. The results indicated that Ce<,0.9> Cu<,0.1>O<,2-δ> was suitable for the treatment of organic wastewaters while Ce<,0.9>Fe<,0.1>O<,2-δ> was suitable for the removal of H acid. The 70％ phenol removal rate with Ce <,0.9>Cu<,0.1>O<,2-δ> catalyst was markedly increased to 90％ with Ce<,0.8>Cu<,0.2>O<,2-δ> catalyst. However, the phenol removal reduced from 30％ to 15％ with Fe content increasing from 10％ to 20％. For the H acid, the increase of the content of Cu or Fe tended to obviously increase the original reaction rate while the COD removal changed little.

关键词： H acid phenol COD removal rate catalytic wet air oxidation rare earths

作者: Ying Yuefang(应跃芳) Wang Yuejuan(王月娟) He Jun(何军) Luo Mengfei(罗孟飞)

作者单位: Zhejiang Key Laboratory for Reactive Chemistry On Solid Surfaces, Institute of Physical Chemistry, Zhejiang Normal University, Jinhua 321004, China

会议类型: 国际会议

会议名称: 第五届国际稀土开发与应用研讨会(The Fifth International Conference on Rare Earth Decelopment and Applicatin)

会议地点: 包头

会议语种:英文

页码: 249-252

在线出版日期: 2007-08-07（万方平台首次上网日期，不代表论文的发表时间）