Influence of the preparation method on the catalytic activity of Co/Zr1−xCexO2 for NO oxidation

Effect of Mn addition on the low‐temperature NH3‐selective catalytic reduction of NOx over Fe2O3/activated coke catalysts: Experiment and mechanism

“…The three peaks at 382°C, 547°C, and 654°C were attributed to the reduction of Fe 3+ , Fe 3 O 4 , and oxygen‐containing functional groups for 6Fe/AC catalyst, respectively . However, for 8Mn6Fe/AC catalyst, two reduction peaks were obtained in the H 2 ‐TPR profile: The first peak at 466°C was attributed to a combination of MnO 2 to Mn 2 O 3 and Fe 2 O 3 to FeO, and the second peak at 630°C was associated to the reduction of the surface capping oxygen species . For 8Mn6Fe/AC catalyst, the reduction peaks temperature of Fe 2 O 3 to FeO and the surface capping oxygen species are lower than those of 6Fe/AC catalyst.…”

Structure, synthesis, and catalytic properties of nanosize cerium-zirconium-based solid solutions in environmental catalysis

“…The solvent with appropriate polarity could decrease the band gap of the catalysts and benefit for more generation of Ce 3+ and Cr 6+ on the catalyst surface, which was beneficial to the adsorption of NO and O2. Moreover, Zhong et al [221] synthesized Co/CZO using citrate acid as complexing agent and by an impregnation method. The sample pre- pared by the former method showed better catalytic performance for NO oxidation than that synthesized by the latter one due to its lower crystallite size, higher content of Ce 3+ , and easier reducibility.…”

Catalytic Oxidation of NO over MnOx–CeO2 and MnOx–TiO2 Catalysts

“…Among the variety of transition metal catalysts, Co-based and Mn-based catalysts display the best catalytic activity for NO oxidation [11]. However, the applications of Co-based catalysts are retarded due to the toxicity of cobalt although they attract much attention [12,13,14,15,16,17,18,19]. Mn-based catalysts are considered as the promising candidates for NO oxidation to NO 2 .…”