负载型TiO2的制备及NO催化氧化性能研究  

作　　者：赵俊 常姗燕 胡洁 李东风 杨玉敏 

机构地区：[1]邢台学院化学与化工学院

出　　处：《化工管理》2020年第4期101-103,共3页Chemical Engineering Management

基　　金：邢台市科技计划支撑项目(ZC2019049)

摘　　要：采用浸渍法制备了一系列M-TiO2(M=Fe、Mn、Cu、Co)单金属氧化物负载型催化剂。在空速(GHSV)为50000h-1的实验条件下,在同一负载量条件下(10wt.%),考察了不同负载金属负载类型对NO的催化氧化性能的影响。结果表明在负载量一定的条件下,Mn-TiO2催化剂对NO的转化效率最高,300℃达到88%。采用XRD、N2吸附/脱附等技术对催化剂的物理化学特征进行了表征测试。XRD结果表明试样中负载金属主要以金属氧化物的形式存在,且Mn-TiO2试样结晶度数值最大,为78.83%。而Fe-TiO2数值最小为62.47%。N2吸附/脱附结果表明。氮气吸附脱附结果表明,同一负载量的条件下,Mn-TiO2比表面积较大,且Mn颗粒在载体表面分布较分散。较高的结晶度、较大的比表面积和活性组分的高度分散性使Mn-TiO2样品,较其他三种元素具有较好的催化效果。A series of M-TiO2(M=Fe,Mn,Cu,Co)supported single-metal oxide catalysts were prepared by impregnation method.The effect of metal loading on the catalytic oxidation of NO was investigated with the same load(10wt.%),under the experimental conditions of space velocity(GHSV)of 50000h-1.The results showed that Mn-TiO2 catalyst had the highest NO conversion efficiency at 300℃,and reached 88%at 300℃under certain conditions.The physical and chemical characteristics of the catalysts were characterized by XRD and N2 adsorption/desorption technique.XRD results show that the metal is mainly in the form of metal oxide,and the crystallinity of Mn-TiO2 sample is the largest,which is 78.83%.While the Fe-TiO2 value is 62.47%.The results show that Mn-TiO2 has a larger specific surface area and the Mn particles are more dispersed on the surface of the carrier under the same loading condition.The higher crystallinity,the larger specific surface area and the high degree of dispersion of the active components make Mn-TiO2 samples have better catalytic effects than the other three samples.

关 键 词：一氧化氮 催化氧化 二氧化钛 二氧化氮 

分 类 号：X701[环境科学与工程—环境工程] O643.36[理学—物理化学]