首页|Selective catalytic reduction of NOx with NH3 over a novel MOF-derived MnOx catalyst
Selective catalytic reduction of NOx with NH3 over a novel MOF-derived MnOx catalyst
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NSTL
A novel MnOx catalyst(Mn-MP)derived from MOF-Mn3(BTC)2(H2O)6 was fabricated and investigated for the selective catalytic reduction of NOx by NH3 at low temperatures.Mn-MP catalyst showed a superior activity and noticeably improved tolerance to SO2.The MOF precursor and doping PVP led to large surface area,small particle size and more crystalline defects of Mn-MP catalyst.The formation of abundant acid sites,Mn~(4+)and surface chemical oxygen would promote the NH3-SCR reaction.In situ DRIFTs demonstrated the high SO2 tolerance over the Mn-MP catalyst not only results from the reduced irreversible sulfurization rate,but also the promoting adsorption of active bidentate nitrates and NH4 in the coexistence of sulfates.Our work shed light on the design of porous MOF-derived MnOx catalysts with high SO2 resistance at low temperatures.
Nitrogen oxidesNH3-SCRMOF-derived MnOx
Zhenguo Li、Ruiyang Chen、Xiaoyu Fang
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National Engineering Laboratory for Mobile Source Emission Control Technology,China Automotive Technology & Research Center,Tianjtn 300300,China
State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing 100029,China
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