| 制备条件对低温NH_3-SCR脱硝催化剂Mn-Ce/TiO_2结构与性能的影响 |
| |
| 引用本文： | 闫东杰,徐颖,黄学敏,玉亚,刘树军.制备条件对低温NH_3-SCR脱硝催化剂Mn-Ce/TiO_2结构与性能的影响[J].环境科学学报,2015,35(6):1697-1702. |
| |
| 作者姓名： | 闫东杰 徐颖 黄学敏 玉亚 刘树军 |
| |
| 作者单位： | 西北水资源与环境生态教育部重点实验室,西安建筑科技大学环境与市政工程学院,西安710055 |
| |
| 基金项目： | 陕西省教育厅科研计划项目(No.14JK1392);国家自然科学基金(No.51408455) |
| |
| 摘 要： | 采用溶胶凝胶法制备了Mn-Ce/TiO2催化剂,以NH3为还原剂,通过程序升温反应考察其选择性催化还原NO的催化性能.同时,着重探讨了焙烧温度、焙烧时间、活性物质负载量及Mn、Ce负载比例对催化剂结构和性能的影响,并用BET、XRD等对催化剂进行了表征.结果表明,活性组分负载量由0增至20%时,NO转化率随着负载量的增加而提高,当(Mn+Ce)质量分数为20%,催化剂活性最高,此后随着活性组分负载量的增加,NO转化率明显下降;Mn与Ce的负载比例为0.85∶0.15时,催化剂比表面积最大,为112.31m2·g-1;焙烧温度500℃时催化剂晶相均为TiO2锐钛矿型结构,焙烧温度升高至600℃,催化剂晶相为TiO2锐钛矿型和金红石型混合结构,且催化剂比表面积急剧减小;焙烧时间对催化剂晶相结构影响不大,焙烧时间为5h时,Mn-Ce/TiO2的脱硝性能最好.
|
| 关 键 词： | 低温SCR 脱硝催化剂 焙烧温度 NO |
| 收稿时间： | 2014/7/18 0:00:00 |
| 修稿时间： | 2014/10/8 0:00:00 |
Effect of preparation conditions on structures and performance of Mn-Ce/TiO2 catalyst for low-temperature NH3-SCR |
| |
| YAN Dongjie,XU Ying,HUANG Xuemin,YU Ya and LIU Shujun.Effect of preparation conditions on structures and performance of Mn-Ce/TiO2 catalyst for low-temperature NH3-SCR[J].Acta Scientiae Circumstantiae,2015,35(6):1697-1702. |
| |
| Authors: | YAN Dongjie XU Ying HUANG Xuemin YU Ya and LIU Shujun |
| |
| Institution: | Northwest Key Laboratory of Water Resource and Environment Ecology, Ministry of Education, School of Environmental & Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055,Northwest Key Laboratory of Water Resource and Environment Ecology, Ministry of Education, School of Environmental & Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055,Northwest Key Laboratory of Water Resource and Environment Ecology, Ministry of Education, School of Environmental & Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055,Northwest Key Laboratory of Water Resource and Environment Ecology, Ministry of Education, School of Environmental & Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055 and Northwest Key Laboratory of Water Resource and Environment Ecology, Ministry of Education, School of Environmental & Municipal Engineering, Xi'an University of Architecture & Technology, Xi'an 710055 |
| |
| Abstract: | |
| |
| Keywords: | low temperature SCR DeNOx catalyst calcination temperature NO |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《环境科学学报》浏览原始摘要信息 |
| 点击此处可从《环境科学学报》下载免费的PDF全文 |
|
