Patent ID: 6957528

Claim:
A method of reducing nitrogen oxides, including NO and NO 2 , in an exhaust stream at a temperature above about 150° C., said method comprising: treating diesel fuel in a non-thermal plasma reactor to make reformed diesel fuel containing oxidized hydrocarbons; adding said reformed diesel fuel to said exhaust stream for the reduction of said nitrogen oxides; generating an ozone containing plasma separately from the making of the reformed diesel fuel and adding said ozone containing plasma to said exhaust stream for oxidation of NO to NO 2 , said ozone containing plasma being added to said exhaust stream separately from said plasma treated diesel fuel; and, thereafter contacting said exhaust stream with a dual bed reduction catalyst comprising at least one of NaY zeolite and BaY zeolite in the first bed and CuY zeolite in the second bed to reduce said nitrogen oxides to N 2 .