Efficient oxidative degradation of 2-chlorophenol and 4-chlorophenol over supported CuO-based catalysts  

作　　者：Jingjing Li Yang Hu Wenhui Lu Lei Shi Qi Sun Yonggang Zhou Jianfeng Xu Jian Wang Bizhong Shen 

机构地区：[1]Institute of Chemistry for Functionalized Materials, Liaoning Normal University, Dalian 116029, Liaoning, China [2]Panjin Center for Disease Control and Prevention, Panjin 124010, Liaoning, China

出　　处：《Journal of Natural Gas Chemistry》2011年第5期493-497,共5页天然气化学杂志（英文版）

基　　金：financially supported by the Education Department of Liaoning Province(No.2009A421)

摘　　要：A series of metal oxide catalysts for catalytic oxidative degradation of 2-chlorophenol （2-CP） and 4-chlorophenol （4-CP） were prepared, and the supported CuO catalysts were studied particularly. The supported CuO catalysts were characterized by XRD and NH3-TPD techniques, in which CuO/γ-Al2O3 exhibited high degradation activity. The addition of Na2O or K2O into CuO/γ-Al2O3 improved the oxidative degradation of CPs remarkably, in which Na2O was more efficient than K2O. Over CuO/γ-Al2O3-Na2O, CPs were completely converted and the liberation of the inorganic chloride from 2-CP or 4-CP reached 97% or 100% respectively at 30 ？C for 2 h. The supported CuO catalysts with good dispersion of CuO particles and less acid sites were favorable for the efficient oxidative degradation of CPs. In addition, the initial pH of the reaction solution was found to be an important factor which influenced the catalytic oxidative degradation of CPs and the initial pH of 11.2 and 9.8 was preferred for the oxidative degradation of 2-CP and 4-CP respectively over CuO/γ-Al2O3 catalyst.A series of metal oxide catalysts for catalytic oxidative degradation of 2-chlorophenol （2-CP） and 4-chlorophenol （4-CP） were prepared, and the supported CuO catalysts were studied particularly. The supported CuO catalysts were characterized by XRD and NH3-TPD techniques, in which CuO/γ-Al2O3 exhibited high degradation activity. The addition of Na2O or K2O into CuO/γ-Al2O3 improved the oxidative degradation of CPs remarkably, in which Na2O was more efficient than K2O. Over CuO/γ-Al2O3-Na2O, CPs were completely converted and the liberation of the inorganic chloride from 2-CP or 4-CP reached 97% or 100% respectively at 30 ？C for 2 h. The supported CuO catalysts with good dispersion of CuO particles and less acid sites were favorable for the efficient oxidative degradation of CPs. In addition, the initial pH of the reaction solution was found to be an important factor which influenced the catalytic oxidative degradation of CPs and the initial pH of 11.2 and 9.8 was preferred for the oxidative degradation of 2-CP and 4-CP respectively over CuO/γ-Al2O3 catalyst.

关 键 词：CUO/Γ-AL2O3 NA2O K2O CHLOROPHENOL oxidative degradation 

分 类 号：TQ225.52[化学工程—有机化工] X703[环境科学与工程—环境工程]