The　ordered　mesoporous　Co3O4,　NiO　and　NiCo2O4　were　synthesized　by　nanocasting　method　using　mesoporous　KIT-6　as　a　hard　template.　Their　structural　and　textural　properties　were　well　characterized　by　powder　X-ray　diffraction,　transmission　electron　microscopy　and　nitrogen　physisorption.　The　surface　areas　of　these　catalysts　are　380-426m2/g.　Selective　catalytic　reduction　(SCR)　of　NOx　with　hydrogen　demonstrates　that　NiCo2O4　possesses　the　highest　catalytic　activity　at　50-400°C,　whose　NOx　conversion　is　more　than　70%　at　150°C,　and　N2　selectivity　is　more　than　90%　at　100-400°C.　In　addition,　NiCo2O4　exhibits　better　stability　in　the　presence　of　100ppm　SO2　and　10vol%　H2O　in　SCR　of　NOx　at　250°C.　XPS　analyses　show　that　surface　adsorption　oxygen　concentration　in　NiCo2O4　is　higher　than　that　in　Co3O4　and　NiO.　The　synergetic　effect　between　Ni　and　Co　is　responsible　for　the　enhancement　of　low-temperature　SCR　activity　and　the　improvement　of　regeneration　performance　in　NiCo2O4.　In　comparison　with　NiCo2O4-CP　synthesized　by　co-precipitation　method,　the　ordered　mesoporous　structure　in　NiCo2O4　provides　larger　surface　area,　more　activated　oxygen　species　and　more　reductive　species,　resulting　in　higher　SCR　performance　at　low　temperature.　©　2015　Elsevier　B.V.