Structure Characteristics and NO Selective Catalytic Reduction Property of Sn xZr1- xO2 Solid Solution Catalysts.

Novel catalysts, Sn _xZr_{1- x}O₂ solid solutions, for NO selective catalytic reduction:NO SCR) are reported. They have much higher activity and selectivity than SnO₂ and ZrO₂. Sn⁴⁺ 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. [ABSTRACT FROM AUTHOR]