10.1016/j.apcatb.2013.05.035
Relationship between structure and performance of a novel cerium-niobium binary oxide catalyst for selective catalytic reduction of NO with NH3

The cerium-niobium mixed oxides were prepared by co-precipitation method. Desired amount of niobium chloride was dissolved in methanol and cerium nitrate in deionized water, respectively. These two kinds of solutions were mixed together and added into an excess of ammonia solution with continuous stirring. Afterwards, the precipitates were collected by filtration for several times until no residue Cl- (detected by AgNO3 solution), dried at 120 degC overnight and calcined at 500 degC for 5 h under air conditions. The molar ratios of Ce/Nb were 1/3, 1/1, and 3/1.
precipitates
dried
120 degC
degC
precipitates
calcined
500 degC
degC
precipitates
calcined
5 h
h
Ce/Nb
molar ratios
1/3, 1/1, and 3/1