Investigation of lattice capacity effect on Cu²+-doped SnO₂ solid solution catalysts to promote reaction performance toward NOx-SCR with NH₃

Abstract

To understand the effect of the doping amount of Cu²+ on the structure and reactivity of SnO₂ in NOx-SCR with NH3, a series of Sn-Cu-O binary oxide catalysts with different Sn/Cu ratios have been prepared and thoroughly characterized. Using the XRD extrapolation method, the SnO2 lattice capacity for Cu²+ cations is determined at 0.10 g CuO per g of SnO2, equaling a Sn/Cu molar ratio of 84/1