湿式催化氧化染料废水催化剂制备研究  

Preparation of catalysts for dye wastewater treatment by CWAO

作　　者：尹敏[1] 谷晋川[1] 樊志金 赵巍[1] 

机构地区：[1]西华大学,四川成都610039

出　　处：《现代化工》2015年第8期76-78,80,共4页Modern Chemical Industry

基　　金：教育部"春晖计划"项目(Z2011099);四川省教育厅项目(11ZA008);西华大学研究生创新基金项目(ycjj2015172)

摘　　要：以锂硅粉为载体,硝酸铁为活性组分,模拟染料废水酸性红88为研究对象,开展湿式催化氧化催化剂制备研究。催化剂最佳制备条件为:浸渍时间为2 h,焙烧温度为400℃,焙烧时间为180 min,在此条件下制备的催化剂对AR88模拟废水的去除率达到95%。对制备的催化剂进行BET分析发现,催化剂的催化活性与比表面积和材料吸附特性有关,为使催化剂表面金属氧化物的热分解完全并形成成熟的晶体,在催化剂的制备过程中应该选择合适的焙烧温度、焙烧时间。The catalysts for dye wastewater treatment are prepared via CWAO by using lithium silicon powder as carrier,iron nitrate solution as the active ingredient solution and acid red （AR88） as the dye. The optimal preparation conditions are shown as follows： immersed for 2 hours and roasted at 400~C for 180 minutes. The removal rate of the AR88 simulated wastewater can reach 95% by using the catalyst obtained under the optimal conditions. The BET results indicate that the catalytic activity is related to specific surface area and material adsorption characteristics. In order to make the complete thermal decomposition of the metal oxides and form the mature crystal, the appropriate roast temperature and time are necessary in the preparation of the catalyst.

关 键 词：催化剂 酸性红88 BET 比表面积 

分 类 号：X703[环境科学与工程—环境工程]