PROCESS FOR THE TREATMENT OF GAS WITH A HIGH OXYGEN CONTENT FOR THE REDUCTION OF EMISSIONS OF NITROGEN OXIDES USING A CATALYTIC COMPOSITION COMPRISING MANGANESE OXIDE AND CERIUM AND / OR ZIRCONIUM OXIDE

摘要

A method for catalytically processing gases with a high oxygen content to reduce nitrogen oxide emissions by using a catalytic composition including manganese oxide and at least one oxide selected from cerium oxide and zirconium oxide. Said composition may further include at least one additional element from groups VIII, IB, IVB and VB. Said method is particularly suitable for processing exhaust gases from internal combustion engines, especially diesel or lean-burn engines.