汽车尾气催化原理分析PPT课件

汽车尾气催化原理分析,1,-,背景：汽车尾气的污染,以导致雾霾增加的NOx为例,（1）轿车,Source:SusanC.Anenberg,JoshuaMiller,RayMinjares,LiDu.Impactsandmitigationofexcessdiesel-relatedNOxemissionsin11majorvehiclemarkets.Nature,2017,545(7655):467,2,-,（2）重型货车,Source:SusanC.Anenberg,JoshuaMiller,RayMinjares,LiDu.Impactsandmitigationofexcessdiesel-relatedNOxemissionsin11majorvehiclemarkets.Nature,2017,545(7655):467,3,-,（3）客车,可见，实际排量事实上要比设计排量高出非常多,Source:SusanC.Anenberg,JoshuaMiller,RayMinjares,LiDu.Impactsandmitigationofexcessdiesel-relatedNOxemissionsin11majorvehiclemarkets.Nature,2017,545(7655):467,4,-,催化器的结构,P.Brandt,YanyingWang,J.W.Grizzle.DynamicModelingofaThree-WayCatalystforSIEngineExhaustEmissionControl.IEEETransactionsonControlSystemsTechnology.2000,8(5):767-776,5,-,催化剂上发生的反应,CO+H2OCO2+H22CO+O22CO22C3H6+9O26CO2+6H2OC3H8+5O23CO2+4H2O2H2+O22H2O2NO2N2+2O22CO+2NON2+2CO2,P.Brandt,YanyingWang,J.W.Grizzle.DynamicModelingofaThree-WayCatalystforSIEngineExhaustEmissionControl.IEEETransactionsonControlSystemsTechnology.2000,8(5):767-776,6,-,其中，最主要的反应为以下(以NO代表NOx)：,2CO+2NON2+2CO22CO+O22CO2HC+O2CO2+H2OHC+NON2+CO2+H2O,P.Brandt,YanyingWang,J.W.Grizzle.DynamicModelingofaThree-WayCatalystforSIEngineExhaustEmissionControl.IEEETransactionsonControlSystemsTechnology.2000,8(5):767-776,7,-,P.Brandt,YanyingWang,J.W.Grizzle.DynamicModelingofaThree-WayCatalystforSIEngineExhaustEmissionControl.IEEETransactionsonControlSystemsTechnology.2000,8(5):767-776,催化活性最高的：COPtNOxRhHCPd,8,-,PPraserthdam，CChaisuk，APanit，KKraiwattanawong，PPraserthdam.SomeaspectsaboutthenatureofsurfacespeciesonPt-basedandMFI-basedcatalystsfortheselectivecatalyticreductionofNObypropeneunderlean-burncondition.AppliedCatalysisBEnvironmental,2002,38(3):227-241,9,-,储氧原理,Ce2O3是三元催化剂的添加剂关键反应：,P.Brandt,YanyingWang,J.W.Grizzle.DynamicModelingofaThree-WayCatalystforSIEngineExhaustEmissionControl.IEEETransactionsonControlSystemsTechnology.2000,8(5):767-776,10,-,储氧原理,TransientModelingof3-WayCatalyticConverters.KNPattas，AMStamatelos，PKPistikopoulos，GCKoltsakis，PAKonstantinidis.Sae,1994.,11,-,储氧原理,TransientModelingof3-WayCatalyticConverters.KNPattas，AMStamatelos，PKPistikopoulos，GCKoltsakis，PAKonstantinidis.Sae,1994.,12,-,分析空燃比对催化的影响,P.Brandt,YanyingWang,J.W.Grizzle.DynamicModelingofaThree-WayCatalystforSIEngineExhaustEmissionControl.IEEETransactionsonControlSystemsTechnology.2000,8(5):767-776,13,-,空燃比与排放成分,P.Brandt,YanyingWang,J.W.Grizzle.DynamicModelingofaThree-WayCatalystforSIEngineExhaustEmissionControl.IEEETransactionsonControlSystemsTechnology.2000,8(5):