Ni-Mn bi-metal oxide catalysts for the low temperature SCR removal of NO with NH3

- The catalysts were prepared by co-precipitation with various molar ratios of Ni/Mn.
- The Ni(0.4)-MnOx catalyst obtained 85% of NO conversion at 95 °C.
- The addition of nickel enhanced the concentration and acidity of Lewis acid sites.
- A synergetic effect through electron transfer between Mn and Ni was proposed.