Correlation between the physicochemical properties and catalytic performances of Ce x Sn1–x O2 mixed oxides for NO reduction by CO.

Highlights: [•] Sn4+ can be incorporated into the lattice of CeO2 to form uniform Ce x Sn1–x O2 solid solution when the mole ratio of Ce:Sn is not less than 2:1. [•] The incorporation of Sn4+ into the lattice of CeO2 is conducive to the decrease of crystallite size, the increase of lattice strain and the improvement of reduction behavior, which further promote the enhancement of catalytic performance. [•] The catalytic domain (CD, -Ce3+-□-Sn2+- species) in these Ce x Sn1–x O2 mixed oxides plays a key role in NO reduction by CO model reaction. [ABSTRACT FROM AUTHOR]