CERIUM-MODIFIED MANGANESE OCTAHEDRAL MOLECULAR SIEVES AS CATALYSTS FOR SELECTIVE CATALYTIC REDUCTION

摘要

This article is useful catalysts and selective catalytic reduction disclosed in (SCR). The catalyst comprises an octahedral molecular sieve (OMS) containing cerium oxide and manganese oxide. 0.1 to catalysts containing 50 wt% of cerium doping, ion-exchange, deposition, or can be prepared by other techniques. In addition, the gaseous mixture containing nitrogen oxide reducing agent with the cerium-SCR process is selectively reduced in the presence of a modified OMS catalyst are disclosed. Cerium-manganese oxide OMS catalyst modification is the selective catalytic reduction, in particular for NH3-SCR, in particular a relatively low temperature (100 & 0 & C to 250 & 0 & C) improved thermal stability and improved the unexpected benefits, including activity for NOx conversion It should provide.