催化作用
氮氧化物
化学
双金属片
选择性催化还原
X射线光电子能谱
吸附
热液循环
双金属
无机化学
选择性
还原(数学)
多相催化
金属
化学工程
锰
金属有机化学
选择性还原
过渡金属
物理化学
有机化学
燃烧
几何学
工程类
数学
作者
Wang Zhang,Yixiang Shi,Chunyan Li,Qidong Zhao,Xinyong Li
出处
期刊:Catalysis Letters
[Springer Nature]
日期:2016-08-16
卷期号:146 (10): 1956-1964
被引量:67
标识
DOI:10.1007/s10562-016-1840-4
摘要
In this study, we have successfully synthesized bimetallic MOFs of MIL-100(Fe-Mn) for SCR of NOx with NH3 via a hydrothermal method The catalyst were characterized by XRD, EDX, N2 adsorption(BET), SEM, in situ FT-IR and XPS. MIL-100(Fe-Mn) catalyst exhibited higher NOx conversion than either of its monometallic counterparts of MIL-100(Fe) and MIL-100(Mn). MIL-100(Fe-Mn) displayed excellent low-temperature activity, which achieved a maximum NOx conversion of 96 % at 260 °C. Moreover, MIL-100(Fe-Mn) showed a satisfactory stability and a good capacity of resisting SO2 and H2O. During NH3-SCR process, a slightly raised NO
x
conversion (approximately 7 %) was observed in the presence of H2O and SO2, which could be attributed to the formed sulfate species that act as new acid sites on the surface of the catalyst. Combined with the in situ FT-IR results, it was concluded that the SCR reaction of the MIL-100(Fe-Mn) followed Eley–Rideal (E–R) mechanism. Schematic diagram of SCR reaction
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