A　series　of　Pt/Ba/ACZ　(ACZ　=　Al2O3-Ce0.6Zr0.4O2)　with　different　Ce0.6Zr0.4O2　loading　were　prepared　and　well　characterized　by　XRD,　N2　physisorption,　H2-TPR,　XAFS　and　STEM-mapping.　NOx　storage　and　reduction　(NSR)　performances　of　Pt/Ba/ACZ　were　initially　evaluated　using　NOx　storage　capacity　and　NOx　conversion.　XRD　analysis　proves　the　formation　of　Ce0.6Zr0.4O2　solid　solution,　with　the　presence　of　which　the　surface　area　of　ACZ　support　slightly　decreases.　STEM-mapping　indicates　that　the　addition　of　Ce0.6Zr0.4O2　improves　the　dispersion　of　Pt.　A　strong　interaction　between　Pt　and　Ce　was　confirmed　by　XAFS　experiments.　H2-TPR　analysis　shows　that　the　addition　of　Ce0.6Zr0.4O2　can　promote　the　redox　properties,　which　is　beneficial　for　enhancing　NSR　performance.　Meanwhile,　Pt/Ba/50　wt%Al2O3-50　wt%C0.6Zr0.4O2　shows　the　superior　NSR　performances,　strong　resistance　against　SO2　and　good　regeneration　ability.　Repeated　H2-TPR　analysis　shows　that　the　desulfation　is　easier　for　sulfated　Pt/Ba/50　wt%Al2O3-50　wt%C0.6Zr0.4O2　compared　to　Pt/Ba/Al2O3.　Moreover,　N2　selectivity　decreases　with　increasing　H2　concentration　from　1　to　5%.　©　2015　Elsevier　Ltd.　All　rights　reserved　.