| CuO（-CeO2）/SBA-15对萘氧化的催化活性及CO2选择性研究 |
| |
| 引用本文： | 徐丽,王静,吴军良,黄碧纯,叶代启.CuO（-CeO2）/SBA-15对萘氧化的催化活性及CO2选择性研究[J].环境污染治理技术与设备,2010(2):387-392. |
| |
| 作者姓名： | 徐丽 王静 吴军良 黄碧纯 叶代启 |
| |
| 作者单位： | 华南理工大学环境科学与工程学院,广州510006 |
| |
| 基金项目： | 国家高技术研究发展计划（863）项目（2006AA06A310）;广东省科技计划项目（2008B050100007）;粤港关键领域项目招标东莞专项（2006168403） |
| |
| 摘 要： | 通过浸渍法制备CuO/SBA-15和CuO-CeO2/SBA-15两种介孔材料催化剂,采用BET、XRD、TPR和XPS等对催化剂进行表征,重点考察催化剂对萘氧化反应的催化活性及对产物CO2的选择性。BET、XRD和XPS等实验结果表明CuO高度分散于介孔分子筛SBA-15中,CeO2可促进CuO在载体上的分散,同时能降低催化剂的TPR还原温度。活性测试结果表明CuO/SBA-15对萘氧化反应的催化活性较高,但是催化氧化的CO2选择性较低,温度在380℃时CO2的生成率仅为60%左右;CeO2的添加不仅提高了CO2的生成率,15%CuO-15%CeO2/SBA-15在325℃使CO2生成率达到99%,而且CeO2增强了催化剂的稳定性。
|
| 关 键 词： | VOCs 催化氧化 介孔分子筛 萘 |
Study on catalytic activity and CO2 selectivity for naphthalene oxidation over CuO（-CeO2）/SBA-15 |
| |
| Abstract: | CuO and CuO-CeO2 supported mesoporous molecular sieves SBA-15 were prepared using an impregnation method,and the catalysts were characterized by BET,XRD,TPR and XPS techniques.The catalytic activity and CO2 selectivity for the complete oxidation of naphthalene were investigated.The results show that CuO is dispersed highly on the mesoporous molecular sieves,CeO2improves CuO dispersion and lower TPR reduction temperature.Besides,the total conversion of naphthalene to CO2 is not achieved over the CuO/SBA-15 catalyst and CO2 yield is 60% at 380℃.It is concluded that CeO2 plays an important role in promoting carbon balance and catalyst stability.Naphthalene conversion to CO2 of 99% is obtained over the 15%CuO-15%CeO2/SBA-15 catalyst at 325℃. |
| |
| Keywords: | VOCs catalytic oxidation mesoporous molecular sieves naphthalene |
| 本文献已被 维普 等数据库收录！ |
|
