Structure Characteristics and NO Selective Catalytic Reduction Property of SnxZr1-xO2 Solid Solution Catalysts

Abstract

Novel catalysts, Sn x Zr 1)x O 2 solid solutions, for NO selective catalytic reduction (NO SCR) are reported. They have much higher activity and selectivity than SnO 2 and ZrO 2 . Sn 4+ is the main reductive sites as proved by TPR. The dilution of Sn sites by the coexisting Zr causes a suppression of propene combustion and consequently promoted the selective reduction of NO. The rutile structure might be beneficial to NO SCR.