Synthesis and characterization of Cu–Co–Fe hydrotalcites and their calcined products

Propene oxidation and NO reduction over MgCu–Al(Fe) mixed oxides derived from hydrotalcite-like compounds

“…1(a) shows the XRD patterns of the as-synthesized hydrotalcite precursors where all samples presented the characteristic diffraction peaks of the hydrotalcite-like structure without any reflections of other possible phases, suggesting the complete incorporation of transition metals Fe and Cu into the crystalline structure. The formation of layered materials is evidenced by the sharp, symmetric, strong lines at low 2Â values and weaker, less symmetric lines at high 2Â values [1,13]. However, when aluminum is increasingly replaced by iron, the diffraction peaks are less intense, and a less crystallized hydrotalcite phase is obtained.…”

“…Among many applications, they are known to be powerful for hydrocarbons oxidation [9][10][11] and/or NO x reduction with hydrocarbons [1] or ammonia [12].…”

Preparation, characterization and application of nanosized copper ferrite photocatalysts for dye degradation under UV irradiation

“…The major mass loss might be related to the thermal decomposition of ferrite precursors and starting of formation of the copper ferrite phase Cu x Fe 3-x O 4 (x ¼ 0.25,0.5,1) [4,15,32]. The process is recorded also as a sharp and intense endothermic process in the DTA curve, with a minimum close to 100 C. Noticeable exothermic effects in the DTA plots are detected below 600 C, but without an associated mass change and can be due to the crystallization of a copper substituted magnetite structure [33]. This exothermic signal is registered as a doublet for sample B.…”

CVD‐Made Spinels: Synthesis, Characterization and Applications for Clean Energy

“…Nowadays, the selection of catalyst for various organic pollutants abatement has been the subject of many studies, although the optimization of catalyst formulation does not appear to be an easy task. Noble metals and transition metal oxides (TMOs) have been widely explored in most commercial applications [5][6][7][8][9][10][11]. Noble metals are very active at low temperature, but their use is limited due to the high price, low thermal stability and tendency to poisoning [12].…”