| 负载型CuMnO_x/TiO_2催化剂催化燃烧甲苯 |
| |
| 引用本文： | 李锦卫,朱佳.负载型CuMnO_x/TiO_2催化剂催化燃烧甲苯[J].工业催化,2015,23(12):1002-1007. |
| |
| 作者姓名： | 李锦卫 朱佳 |
| |
| 作者单位： | 深圳职业技术学院建筑与环境工程学院，广东 深圳 518055 |
| |
| 摘 要： | 采用沉积-沉淀法制备CuMnO_x/TiO_2新型甲苯燃烧催化剂,考察焙烧温度、Cu与Mn物质的量比、Cu和Mn总负载量、空速及水蒸汽含量对催化甲苯燃烧性能的影响。研究表明,焙烧温度500℃和Cu与Mn物质的量比为1∶1时,催化剂活性最好,反应温度250℃时,甲苯去除率为100%;水蒸汽的出现明显降低了甲苯转化率。XRD和H2-TPR表征结果表明,CuMnO_x/TiO_2催化剂的主要活性相为铜锰尖晶石(Cu1.5Mn1.5O4),它的存在降低了CuMnO_x/TiO_2催化剂的还原温度,是催化活性优良的主要原因。
|
| 关 键 词： | 催化剂工程 挥发性有机物 甲苯 催化燃烧 Cu-Mn复合氧化物 CuMnOx/TiO2 催化剂 |
Catalytic combustion of toluene over supportedCuMnOx/TiO2 catalysts |
| |
| LI Jinwei,Zhu Jia.Catalytic combustion of toluene over supportedCuMnOx/TiO2 catalysts[J].Industrial Catalysis,2015,23(12):1002-1007. |
| |
| Authors: | LI Jinwei Zhu Jia |
| |
| Affiliation: | School of Civil and Environmental Engineering, Shenzhen Polytechnic, Shenzhen 518055, Guangdong, China |
| |
| Abstract: | CuMnOx/TiO2 catalysts were prepared by deposition-precipitation method and applied to the total oxidation of toluene.The effects of calcination temperatures,molar ratios of Cu to Mn,the loading of Cu-Mn mixed oxides,space velocity and water vapor on the performance of the catalysts for toluene conversion were investigated.The results showed that the sample with Cu/Mn molar ratio of 1∶1 and calcined at 500 ℃ exhibited the best catalytic activity for total oxidation of toluene,and toluene conversion of 100% was attained at reaction temperature 250 ℃.Water vapor had a significant negative effect on the catalytic activity of the catalysts.The results of XRD and H2-TPR characterization revealed that the active species ofCuMnOx/TiO2 was Cu1.5Mn1.5O4,which greatly decreased the reduction temperature ofCuMnOx/TiO2 and improved the catalytic activity. |
| |
| Keywords: | catalyst engineering VOCs toluene catalytic combustion copper-manganese complex oxide CuMnOx/TiO2 catalyst |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《工业催化》浏览原始摘要信息 |
|
点击此处可从《工业催化》下载全文 |
|
