Cu-Mn/TiO_2和Cu-Mn/γ-Al_2O_3催化剂制备条件的优化  

Preparation of Cu-Mn/TiO_2 and Cu-Mn/γ-Al_2O_3 Catalysts

作　　者：李玮[1] 黄丽丽[2,3] 翟友存[2,3] 张涛[1,4] 邹克华[1,3] 

机构地区：[1]天津工业大学环境与化学工程学院,天津300387 [2]天津市环境保护科学研究院 国家环境保护恶臭污染控制重点实验室,天津300191 [3]天津迪兰奥特环保科技开发有限公司,天津300191 [4]天津市环境保护局,天津300191

出　　处：《石油化工》2014年第11期1319-1325,共7页Petrochemical Technology

基　　金：天津市应用基础及前沿技术研究计划资助项目(12JCYBJC15000);天津科技创新体系及平台建设计划资助项目(13TXGCCX06200)

摘　　要：以Cu-Mn负载量、n(Cu)∶n(Mn)、焙烧温度和焙烧时间为4因素3水平设计正交实验,对浸渍法制备Cu-Mn/Ti O2和Cu-Mn/γ-Al2O3催化剂的条件进行优化,并考察催化剂催化氧化甲醛的活性。采用XRD、N2等温吸附-脱附和SEM等方法对催化剂进行表征。实验结果表明,焙烧温度对催化剂的活性影响较大;与Cu-Mn/Ti O2催化剂相比,Cu-Mn/γ-Al2O3催化剂催化氧化甲醛的活性更高。Cu-Mn/γ-Al2O3催化剂的最佳制备条件为Cu-Mn负载量30%(w)、n(Cu)∶n(Mn)=1∶4、焙烧温度500℃、焙烧时间6 h,在此条件下制备的Cu-Mn/γ-Al2O3催化剂,Cu-Mn氧化物呈高分散状态,甲醛的去降除率可达98.14%。The Cu-MrdTiO2 and Cu-Mn/γ-A1203 catalysts were prepared through impregnation and characterized by means of XRD, N2 adsorption-desorption and SEM. The catalysts were used in the catalytic oxidation of formaldehyde. The effects of Cu-Mn loading, n （Cu） ： n （Mn）, calcination temperature and calcination time on the catalyst activities were investigated by orthogonal experiments. It was found that the effect of the calcination temperature was the biggest and the activity of the Cu-Mn/ γ-Al2O3 catalyst was higher than that of the Cu-Mn/TiO2 catalyst. It was found that the Cu-Mn oxides were highly dispersed, and the removal rate of formaldehyde could reach 98.14% under the optimum conditions for the Cu-Mn/7-Al2O3 catalyst preparation： Cu-Mn loading of 30% （w）, n （Cu） ： n （Mn） 1 ： 4, calcining time 6 h and calcination temperature 500 ℃.

关 键 词：铜锰复合氧化物 双金属催化剂 催化氧化 脱甲醛 

分 类 号：TQ426.82[化学工程]