NITROGEN OXIDE CATALYTIC CRACKING CATALYST AND CATALYTIC CRACKING METHOD

摘要

PURPOSE:To provide nitrogen oxide catalytic cracking catalysts which are scarcely deteriorated even if oxygen or sulfur oxides are present in the case that nitrogen oxides are removed from gases containing nitrogen oxides and a catalytic cracking method using the catalysts. CONSTITUTION:Copper ions and ions of transition metals other than copper are included in zeolite having the mole ratio SiO2/Al2O3 of at least 20 to provide nitrogen oxide catalytic cracking catalysts and a nitrogen oxide catalytic cracking method using the catalysts is provided.