Lattice expansion and smaller CuO CeO2− particles formation by magnesium interaction for low temperature CO oxidation

Tuning the catalytic performance of a Cu supported silica modified γ-Al2O3 nanocatalyst via cobalt-doping for A3-coupling

“…fine tuning of metal–metal bonds in the hybrid state (structural tuning), and exchange or transfer of electrons between the metals (electronic tuning), together with adsorption and stabilization of reactants and intermediates, account for the augmented catalytic activity and selectivity of doped nano-metal catalysts in comparison to their corresponding undoped counterparts. A wide array of dopants including alkali metals, 23 transition metals, 24 alkaline earth metals, 25 rare earth elements, 26 non-metals, 27 metal oxides, 28 etc. have been reported to exert promotional effects on various transition nano-metal catalysts.…”

Low temperature oxidation of CO using alkali- and alkaline-earth metal-modified ceria-supported metal catalysts: a review

“…The comparison of light-off temperature, 50% (T 50 ) and 100% (T 100 ) CO conversion temperature of Mg-doped MnCe, CuCe and Cs-doped CuCe is shown in table 2. In our previous study, Mg-modified MnCe and Cs and/or Mg-modified CuCe catalyst reported for CO oxidation separately [72,73]. Lavande et al [72,74] prepared Mg-doped Mn and Cu-modified CeO 2 (MnCe and CuCe) for complete CO oxidation.…”

“…Light off, T 50% and T 100% CO conversion temperature of Mg-modified MnCe (0.5:0.5 mol) and Mg-and Cs-modified CuCe (0.15:0.185 mol)[72][73][74]. However, 0.125 wt% Mg-doped MnCe catalyst showed higher CO oxidation at light-off temperature compared to the 6 wt% MgCuCe.…”

CO oxidation over Cu-Ce binary oxide prepared by solvothermal method: Effects of cerium precursors on the properties and catalytic behavior

“…To improve the activity of Cu-Ce composite oxide catalyst, the addition of a third component has been usually adopted, such as alkali metal Cs (Waikar et al 2020); alkali earth metal Mg (Waikar et al 2021); transition metals such as Zr (Wang et al 2021), Co (Liu et al 2014), Mn (Lin et al 2018) and Fe (Ma et al 2011); rare earth metals such as La, Pr, Sm (Reddy et al 2012), precious metals such as Ag (Kim et al 2019), Ru (Cui et al 2014), Pd (Cwele et al 2016) and Pt (Wu et al 2018), etc. For example, Kim et al (2019) reported that the addition of Ag reduced the temperature for complete conversion of CO (T 100 ) of Cu-Ce mixed oxide from 120 to 100 o C. Similarly, Wu et al (2018) found that the addition of Pt decreased the T 100 of Cu-Ce mixed oxide for the catalytic oxidation of CO from > 100 o C to 85 o C.…”