Preparation and catalytic activity in ethanol combustion reaction of cobalt–iron spinel catalysts

Characterization and Catalytic Properties of Ni‐Fe Spinel Catalysts for Total Oxidation of Ethanol

“…Besides, it has been demonstrated by XPS at room temperature that the surface of unreduced HT−Na solid is rich in Ni species suggesting that Ni 2+ is the active phase in ethanol total oxidation and that Fe species did not play a strong catalytic role as already observed by B. Mehlomakulu et al and N. Rezlescu et al . Moreover, Y. Hammiche et al tested Fe 2 O 3 oxide prepared by co‐precipitation method in total oxidation of ethanol in order to check the contribution of Fe species to the catalytic behavior of Fe based mixed oxides; the obtained results showed a very low catalytic activity for this solid as the ethanol is totally converted only at 400 °C. The proportion of lattice oxygen for the reduced HT−Na sample (68%) can also be the reason for its high activity.…”

“…Among them, spinel oxides of transition metals have shown very good catalytic activity in oxidation reactions. These materials have been identified as active phases in various processes, as in oxidation of 2‐propanol and toluene, oxidation of methane, deep oxidation of unsaturated hydrocarbons and ethanol combustion in recent studies …”

The variation of cationic microstructure in Mn-doped spinel ferrite during calcination and its effect on formaldehyde catalytic oxidation

“…The substitution of Fe sites in spinel structure promotes the Fe 3+ ↔ Fe 2+ redox couple and accordingly the redox properties of ferrites. From previous studies [16][17][18][19][20], the dopants (Mn, Co, Ni, Cu, Zn) modified the catalytic activity of ferrites. Recently, Mn substitution in spinel ferrite has been found greatly improving the catalytic activity in HCHO oxidation [21], as evidenced by the obvious decrease of about 100 • C in both the temperatures of 90% HCHO conversion and 90% CO 2 generation.…”

Effect of Mn substitution on the promoted formaldehyde oxidation over spinel ferrite: Catalyst characterization, performance and reaction mechanism

“…In the last few years, spinel ferrites have been extensively pursued, due to their high thermal resistance, strong magnetism and catalytic activity [25]. The substitution of transition metals (Co, Ni, Cu, Zn) in spinel ferrites has been found modifying its redox activity of ferrites [26][27][28][29][30]. The transition metal dopants in the spinel structure generally promote the formation of mixed or inverse spinel structures [31].…”