载体对含硫四氮杂卟啉铁(Ⅱ)/树脂催化剂降解水中有机污染物效率的影响  

Effect of Carrier on Performance of Sulfur-Containing Iron (Ⅱ)-Porphyrazine/Resin Catalyst for Degradation of Organic Pollutants in Water

作　　者：刘敏[1] 韩端壮[2] 邓克俭[2] 王夺元[2] 

机构地区：[1]株洲师范高等专科学校化学系,湖南株洲412007 [2]中南民族大学化学与生命科学学院,湖北武汉430074

出　　处：《催化学报》2004年第10期834-838,共5页

基　　金：国家自然科学基金资助项目 ( 2 0 3 770 5 3 );湖北省自然科学基金资助项目 ( 2 0 0 3ABA0 71)

摘　　要：考察了用阴离子交换树脂作为载体时对含硫四氮杂卟啉铁 (Ⅱ ) (简写为FePz(dtn) 4 )催化剂活化分子氧降解罗丹明B等水中有机污染物效率的影响 .结果表明 ,负载FePz(dtn) 4 催化剂的离子交换树脂对底物的吸附可在 30min内达到平衡 .在不同pH的溶液中 ,载体对不同底物分子的吸附量不同 .同一种底物在碱性溶液中的吸附量最大 ,催化降解速率最快 .负载于树脂上的FePz(dtn) 4 催化剂可重复使用 .初步探讨了催化剂对有机污染物降解的作用机理 .Sulfur-containing iron(Ⅱ)-porphyrazine (abbreviated to FePz(dtn) 4) is a catalyst which can activate molecular oxygen to degrade organic pollutants in water. In this paper, the influence of anion-exchanged resin used as the carrier on the catalytic efficiency of FePz(dtn) 4 was investigated in aqueous solutions with different pH. The adsorption equilibrium of substrates such as rhodamine B on the resin was reached in 30 min. The adsorption amount of different substrates varied with pH, and the largest adsorption amount was obtained in an alkaline borate buffer, in which the rate of oxidative degradation of the substrates was also the fastest. The FePz(dtn) 4 catalyst carried on the resin could be used repeatedly. The mechanism for the oxidative degradation of organic pollutants over the FePz(dtn) 4/resin was explored roughly.

关 键 词：含硫四氮杂卟啉铁 配合物催化剂 阴离子交换树脂 吸附 分子氧 有机污染物 降解 

分 类 号：X703[环境科学与工程—环境工程]