Citation: WEI Yu-liang, GUI Ke-ting, LIU Xiang-xiang, LIANG Hui, GU Shao-chen, REN Dong-dong. Performance of Mn-Ce co-doped siderite catalysts in the selective catalytic reduction of NO_x by NH₃[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(12): 1495-1503. shu

Performance of Mn-Ce co-doped siderite catalysts in the selective catalytic reduction of NO_x by NH₃

Key Laboratory of Energy Thermal Conversion and Control of Ministry of Education, School of Energy and Environment, Southeast University, Nanjing 210096, China

Corresponding author: GUI Ke-ting, ktgui@seu.edu.cn
Received Date: 3 September 2019
Revised Date: 12 November 2019

Fund Project: the National Natural Science Foundation of China 51276039Environmental Protection Research Project of Jiangsu Province 2015008The project was supported by the National Natural Science Foundation of China (51276039) and Environmental Protection Research Project of Jiangsu Province (2015008)

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Siderite, rich in the transition elements, is an idea material to prepare the catalysts for the selective catalytic reduction (SCR) of NO_x 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 NO_x (de-NO_x) by SCR with NH₃ was then investigated. The results illustrate that FeCO₃ as the main component of siderite can be converted into Fe₂O₃ 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-NO_x by SCR and high resistance against sulfur. Over the 3%Mn1%Ce-siderite catalyst, high NO_x conversion (>90%) is achieved in the temperature window of 180-300℃; moreover, the NO_x conversion remains above 75% even after introducing SO₂ for 7.5 h.
- Mn-Ce co-doping,
- siderite,
- selective catalytic reduction,
- de-NO_x,
- sulfur resistance
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沈阳化工大学材料科学与工程学院沈阳 110142

Performance of Mn-Ce co-doped siderite catalysts in the selective catalytic reduction of NOx by NH3

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通讯作者: 陈斌, bchen63@163.com

Performance of Mn-Ce co-doped siderite catalysts in the selective catalytic reduction of NO_x by NH₃