Influences of Co-Content on the Physico-Chemical and Catalytic Properties of Perovskite GdCoxFe1-xO3 in CO Hydrogenation

The effect of the substitution of cobalt into the GdFeO3 perovskite structure on the selective hydrogenation of CO was investigated. A series of GdCoxFe1-xO3 (x = 0; 0.2; 0.5; 0.8; 1) samples were synthesized by sol-gel technology and characterized by XRD, BET specific area, DSC, TG, EDX and XPS. The experimental data made it possible to reveal a correlation between the state of iron and cobalt atoms, the fractions of surface and lattice oxygen, and catalytic characteristics. It has been found that varying the composition of GdCoxFe1-xO3 complex oxides leads to a change in the oxygen-metal binding energy in Gd-O-Me, the ratio of metals in various oxidation states, and the amount of surface and lattice oxygen, which affects the adsorption and catalytic characteristics of complex oxides.

Automated summary

The effect of cobalt substitution on the selective hydrogenation of CO in the GdFeO3 perovskite structure was studied. A series of GdCoxFe1-xO3 (x = 0; 0.2; 0.5; 0.8; 1) samples were synthesized and characterized. The data revealed correlations between the state of iron and cobalt atoms, fractions of surface and lattice oxygen, and catalytic characteristics.