NITROGEN OXIDE-REDUCING CATALYST AND PROCESS FOR REDUCING NITROGEN OXIDES IN EXHAUST GAS

摘要

The present invention relates to a catalyst for reducing nitrogen oxides (NOx) in exhaust gas, comprising crystalline metallosilicate ion-exchanged with Co, and channels of particular structure formed in the crystalline metallosilicate, and to a NOx reduction process using said catalyst; said catalyst having a high selectivity for NOx reduction and a high NOx reduction activity even at low temperatures.