期刊
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
卷 26, 期 35, 页码 35846-35859出版社
SPRINGER HEIDELBERG
DOI: 10.1007/s11356-019-06455-6
关键词
Hollow flower-like microsphere; Nanosheet self-assembly; Mixed oxide; NH3-SCR
资金
- National Key R&D Program of China [2017YFC0210303]
- National Natural Science Foundation of China [U1660109, 21806009]
- China Postdoctoral Science Foundation [2018 M631344]
- Fundamental Research Funds for the Central Universities [FRF-TP-18-019A1]
A series of MnCoOx flower-like hollow microspheres with various molecular proportions of reactant were prepared through simple solvothermal method for the ammonia selective catalytic reduction (SCR) at low temperatures. The as-prepared samples have been applied by various characterization techniques to explore the formation process of the morphology and physicochemical properties. The Mn(1)Co(1)O-x presented the optimal intrinsic catalytic performance (95% NOx conversion at 75 degrees C), favorable thermal stability, and strong SO2 resistance. The excellent properties mainly related to its higher specific surface area and abundant active sites originated from hollow microsphere special structure consists of abundant nanosheets, robust redox properties beneficial for the strong interaction between the manganese and cobalt, larger number of acidic sites and stronger acid strength, etc., which collaboratively dominate its catalytic properties of NH3-SCR at low temperatures.
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