汽车尾气的危害与净化

5421202002200375.28%6510l1540CONOxHCSOx,CO290CO60HC30NOxCOAF14.7CO2H2O222(/4)2mnmCHnmOnCOHO++→+A/F14.7COA/F14.7COCO2222COCOO→+COCOCOHb55CO10-71.2×10-411h2minNOxNOxNO222NONO+→NOxNONONO2NOxNONO2NOxNOx×610−NOx×610−5.00.5312501min1.08035min2051h1001503060minHCHCHCHCHCNOxSOxSO2SOxSO2CO2CO2200tCO230CO2CONOxHC609556222HCOCOHO+→+22COOCO+→x222HCNOCO+HO+N+→x22CONOCO+N+→2322MgO2AlO5SiO⋅⋅CeO21.2.CeO23.222HO+COCO+H→COH2NOmn22nCH+mHOmCO+(m+)H2→NO4.222-xxCO+CeOxCO+CeO→22-x2xO+CeOCeO2→5.Ce2O3Ce2(SO4)36.PtPdNORhNOxPtPbHCPtCOSO2NORhPbCOHCNOxPdRhPdBaLa57PdHCNOxNOx2001200320032003