稀燃汽车尾气中NO催化氧化催化剂研究进展
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摘要
NO是稀燃汽车尾气中的主要污染物,关于稀燃条件下NOx的消除是当前环境催化研究的热点。从NO催化氧化为NO2在选择性催化还原(SCR)、存储还原(NSR)以及颗粒物捕集器(DPF)中起着重要的作用出发,重点综述了NO催化氧化催化剂,包括贵金属催化剂、负载型催化剂、复合金属氧化物催化剂等,以及H2O、SO2对催化剂活性的影响,并提出NO催化氧化研究存在的问题,并指出了发展方向。
NO is the main pollutant in the lean-burn exhaust of vehicles.To eliminate the nitrogen oxides under lean-burn condition is a hot issue in environmental catalysis.Based on the importance of the catalytic oxidation of NO to NO2 in SCR,NSR and DPF,emphases were put on the catalysts applied in catalytic oxidation of NO,such as noble metal catalysts,supported catalysts and complex metal oxide catalyst,and the influences of H2 O,SO2to the activity.Finally,the major existing problems and research direction in the field of NO catalytic oxidation were outlined.
NO is the main pollutant in the lean-burn exhaust of vehicles.To eliminate the nitrogen oxides under lean-burn condition is a hot issue in environmental catalysis.Based on the importance of the catalytic oxidation of NO to NO2 in SCR,NSR and DPF,emphases were put on the catalysts applied in catalytic oxidation of NO,such as noble metal catalysts,supported catalysts and complex metal oxide catalyst,and the influences of H2 O,SO2to the activity.Finally,the major existing problems and research direction in the field of NO catalytic oxidation were outlined.
引文
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[21]白书立,赵江红,朱珍平.SO2促进的碳纳米管负载V2O5催化剂用于NH3选择性还原NO[J].化工新型材料,2009,37(1):23-25.
[22]谢颖,金正来,陈英,等.Pt/Ba/TiCeO催化剂上NOx的存储和抗硫性能研究[J].燃料化学学报,2011,39(4):300-306.
[23]马爱静,王绍增,邹鸿鹄,等.La0.7Sr0.3Co1-xFexO3催化剂氮氧化物的储存及抗硫性能[J].物理化学学报,2012,28(6):1474-1480.
[24]Jin R B,Liu Y,Wang Y,et al.The role of cerium in the improved SO2tolerance for NO reduction with NH3over Mn-Ce/TiO2catalyst at low temperature[J].Appl Catal B:Environ,2014,148/149:582-588.
[2]Manfred K,Giuseppe M,Fabio R,et al.Enhanced reoxidation of vanadia by NO2in the fast SCR reaction[J].J Catal,2002,209(1):159-165.
[3]Erkfeldt S,Jobson E,Larsson M.The effect of carbon monoxide and hydrocarbons on NOxstorage at low temperature[J].Top Catal,2001,16/17(1/4):127-131.
[4]Suresh K M,Rayalua S,Teraokab Y,et al.High NO oxidation catalytic activity on non-noble metal based cobalt-ceria catalyst for diesel soot oxidation[J].J Mol Catal A-Chem,2014,385:112-118.
[5]Xue E,Seshan K,Ross J.Roles of supports,Pt loading and Pt dispersion in the oxidation of NO to NO2and of SO2to SO3[J].Appl Catal B,1996,11(1):65-79.
[6]Dawody J,Skoglundh M,Fridell E.The effect of metal oxide additives(WO3,MoO3,V2O5,Ga2O3)on the oxidation of NO and SO2over Pt/Al2O3and Pt/Ba/Al2O3catalysts[J].J Mol Catal A-Chem,2004,209(l/2):259-269.
[7]Grisel C,Fierro J L G,Ramón M,et al.Improved sulfur resistance of Pt-Sn/γ-Al2O3catalysts for C3H8-NO-O2reaction under lean conditions due to Pt-Sn surface interactions[J].J Mol Catal A-Chem,2005,228(1/2):275-282.
[8]Kaneeda M,Iizuka H,Hiratsuka T.Improvement of thermal stability of NO oxidation Pt/Al2O3catalyst by addition of Pd[J].Appl Catal B-Environ,2009,90(3/4):564-569.
[9]Jazaer D,Magnus S,Louise O,et al.Kinetic modeling of sulfur deactivation of Pt/BaO/Al2O3and BaO/Al2O3NOxstorage catalysts[J].Appl Catal B:Environ,2007,70(1/4):179-188.
[10]Wan H Q,Li D,Dai Y,et al.Catalytic behaviors of CuO supported on Mn2O3 modified for NO reduction by CO[J].J Mol Catal A-Chem,2010,332(1/2):32-44.
[11]Koh H L,Park H K.Characterization of MoO3-V2O5/Al2O3catalysts for selective catalytic reduction of NO by NH3[J].J Ind Eng Chem,2013,29(1):73-79.
[12]李小海,张舒乐,钟秦.铈掺杂Mn/TiO2催化氧化NO的性能[J].化工进展,2011,30(7):1503-1508.
[13]徐文青,赵俊,王海蕊,等.TiO2负载Mn-Co复合氧化物催化剂上NO催化氧化性能[J].物理化学学报,2013,29(2):385-390.
[14]Li H,Tang X L,Yi H H,et al.Low-temperature catalytic oxidation of NO over Mn-Ce-Oxcatalyst[J].J Rare earth,2010,28(1):64-68.
[15]Li K,Tang X L,Yi H H,et al.Low-temperature catalytic oxidation of NO over Mn-Co-Ce-Oxcatalyst[J].Chem Eng J,2012,192:99-104.
[16]Shen B,Lin X,Zhao Y X.Catalytic oxidation of NO with O2over Pt/γ-Al2O3and La0.8Sr0.2 MnO3[J].Chem Eng J,2013,222:9-15.
[17]Shen M Q,Zhao Z,Chen J H,et al.Effects of calcium substitute in LaMnO3 perovskites for NO catalytic oxidation[J].J Rare earth,2013,31(2):119-123.
[18]罗晶,童志权,黄妍,等.H2O和SO2对Cr-Ce/TiO2催化氧化NO性能的影响[J].环境科学学报,2010,30(5):1023-1029.
[19]Pan S W,Luo H C,Li L,et al.H2O and SO2deactivation mechanism of MnOx/MWCNTs for low-temperature SCR of NOx with NH3[J].J Mol Catal A-Chem,2013,377:154-161.
[20]李小海,张舒乐,贾勇,等.H2O和SO2对Ce(1)Mn(3)Ti催化剂催化氧化NO性能的影响[J].燃料化学学报,2012,40(7):866-871.
[21]白书立,赵江红,朱珍平.SO2促进的碳纳米管负载V2O5催化剂用于NH3选择性还原NO[J].化工新型材料,2009,37(1):23-25.
[22]谢颖,金正来,陈英,等.Pt/Ba/TiCeO催化剂上NOx的存储和抗硫性能研究[J].燃料化学学报,2011,39(4):300-306.
[23]马爱静,王绍增,邹鸿鹄,等.La0.7Sr0.3Co1-xFexO3催化剂氮氧化物的储存及抗硫性能[J].物理化学学报,2012,28(6):1474-1480.
[24]Jin R B,Liu Y,Wang Y,et al.The role of cerium in the improved SO2tolerance for NO reduction with NH3over Mn-Ce/TiO2catalyst at low temperature[J].Appl Catal B:Environ,2014,148/149:582-588.