燃料化学学报2019，Vol.47Issue(12)：1495-1503,9.
Mn/Ce改性菱铁矿催化剂在SCR脱硝反应中的特性研究
Performance of Mn-Ce co-doped siderite catalysts in the selective catalytic reduction of NOx by NH3
摘要
Abstract
Siderite, rich in the transition elements, is an idea material to prepare the catalysts for the selective catalytic reduction ( SCR) of NOx by NH3 . In this work, siderite was doped with Mn and Ce and the performance of Mn-Ce co-doped siderite catalysts in the removal of NOx( de-NOx ) by SCR with NH3 was then investigated. The results illustrate that FeCO3 as the main component of siderite can be converted into Fe2 O3 by calcination at 450℃. The doping of siderite with Mn and Ce can enhance the surface area and acidity of siderite and reduce the thermal stability of ammonium sulfate formed on the catalyst surface. As a result, the Mn-Ce co-doped siderite catalysts exhibit high efficiency in the de-NOx by SCR and high resistance against sulfur. Over the 3％Mn1％Ce-siderite catalyst, high NOx conversion (>90％) is achieved in the temperature window of 180-300 ℃; moreover, the NOx conversion remains above 75％ even after introducing SO2 for 7. 5 h.关键词
Mn-Ce共掺杂/菱铁矿/选择性催化还原/脱硝/抗硫性Key words
Mn-Ce co-doping/siderite/selective catalytic reduction/de-NOx/sulfur resistance分类
资源环境引用本文复制引用
魏钰靓,归柯庭,刘祥祥,梁辉,顾少宸,任冬冬..Mn/Ce改性菱铁矿催化剂在SCR脱硝反应中的特性研究[J].燃料化学学报,2019,47(12):1495-1503,9.基金项目
The project was supported by the National Natural Science Foundation of China ( 51276039 ) and Environmental Protection Research Project of Jiangsu Province (2015008). （ 51276039 ）
