Comparative investigation of CoFe2O4/CuAl2O4/CeO2/TiO2 ceramic nanocomposites prepared through various methods as catalysts for NH3-SCR

For comparison purposes, CoFe2O4/CuAl2O4/CeO2/TiO2 ceramic nanocomposites fabricated by four approaches have been utilized as catalysts for selective catalytic reduction of NO by NH3 (NH3-SCR). The studies specified that the preparation method had a high impact on structural properties and thereby the catalytic performance of the samples. The physical-chemical characteristics of the catalyst nanocomposites including molar ratio of metals, phase composition, crystallite size, particle size distribution, specific surface area, average pore diameter, pore volume, and agglomeration degree have been distinguished. From the comparison of structural and catalytic properties of the synthesized nanocomposites, it was identified that the sample prepared by mixing CoFe2O4 precursor with other components had the best physicochemical properties and thereby the highest NH3-SCR performance.