Selective catalytic oxidation of ammonia to nitrogen over Mg-Al, Cu-Mg-Al and Fe-Mg-Al mixed metal oxides doped with noble metals

TPR study and catalytic performance of noble metals modified Al2O3, TiO2 and ZrO2 for low-temperature NH3-SCO

“…According to i-SCR mechanism noble metals (e.g. Pt, Pd and/or Rh) are expected to catalyze ammonia oxidation to NO (2) were given in previous studies [5].…”

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

“…Furthermore, during the simultaneous elimination of C 3 H 6 and NO, T 50 values are higher ( Table 2) compared to T 50 in the absence of NO, this could be due to the competition on the metallic sites, what makes NO reduction and C 3 H 6 oxidation more difficult. A study by Worch et al [30] investigated the SCR of NO with propene over catalysts with [12,26,31] tested mixed oxides of Cu, Mg, Al and Fe derived from hydrotalcite-like compounds for NO reduction, and showed that they are active catalysts, and that the activity depends on their chemical composition, mainly on the presence of copper oxide phases and on their redox properties. The activity in C 3 H 6 -SCR of MgAl calcined hydrotalcites prepared by four different methods was investigated by Yuan et al [26], the maximum NO conversion for the catalyst prepared by the coprecipitation method was 8% at 550 • C. The incorporation of copper into the hydrotalcite structure is then important for better NO conversions, while iron oxides play an important role in lowering the reaction temperature.…”

Conversion of Biomass-Derived 2-Hexanol to Liquid Transportation Fuels: Study of the Reaction Mechanism on Cu–Mg–Al Mixed Oxides

“…(iii) The upgrading of polyols (1,3-butanediol) on these materials gives valuable oxygenates by either dehydrogenation or dehydration reactions, depending on the copper loading [10]. Recently, other researchers have shown that similar Cu-Mg-Al mixed oxides promote C-C coupling [11,12], aqueous phase hydrogenation [13] and several oxidation [14][15][16] reactions, among many other applications.…”