Low Temperature Toluene Oxidation Over Pt Nanoparticles Supported on Yttria Stabilized-Zirconia

Promotion of Pt Nanoparticles by Lattice Oxygen in SmFeO3 Perovskite Group for Carbon Monoxide and Ethylene Oxidation

“…Figure 4 shows the representative light-off curves for CO and C 2 H 4 conversion over Pt/SCF-5 and Pt/SCF-1 as a function of temperature for three consecutive runs. The performance of all catalysts is stable after the first cycle because the second and third cycles are similar, indicating that Pt nanoparticles remain free of sintering or deactivation, in agreement with recent works on supported Pt NPs [26,32,53]. Figure 5 shows the reaction rate per catalyst active surface area (Table 1) and TOF, whereas Fig.…”

“…In another study, Marnellos et al [25] reported full conversion of ethylene under fuel lean conditions (P C2H4 = 0.5 kPa and P O2 = 1.5 kPa) at 550°C over La 0.6 Sr 0.5 Co 0.8 Fe 0.2 O 3-d deposited on yttriastabilized zirconia. The catalytic activities of different perovskite oxides have been reported for the oxidation of other VOCs and light hydrocarbons such as toluene [26][27][28], propane [21], methane [22] and propylene [29].…”

Catalytic combustion of toluene over copper oxide deposited on two types of yttria-stabilized zirconia

“…It should be noticed that better catalytic performance in the total oxidation of toluene was observed for metal oxides deposited on zirconia than on ␥-alumina [9,10]. This effect was attributed to the formation of active phases exhibiting higher reducibility, because zirconia limits the dispersion of an active phase.…”

“…Larger active phase crystallites facilitate oxygen adsorption on noble metals, which is the rate-determining step in the toluene oxidation occurring according to the Mars van Krevelen or Eley-Rideal mechanisms. Moreover, the presence of oxygen surface vacancies in ZrO 2 enables the chemisorption of reactants [9]. Zirconia is also characterized by good mechanical and thermal stability [10,11].…”

Size-dependent activity of Pt/yttria-stabilized zirconia catalyst for ethylene and carbon monoxide oxidation in oxygen-free gas environment

“…Thus, in the case of NPs dispersed on YSZ, the general phenomenon of metalsupport interaction (MSI) [10] is functionally identical to EPOC [5,[7][8][9]. Several recent studies demonstrated that YSZ can finely disperse and stabilize nanoparticles and strongly enhance the catalytic activity of metal or metal oxide nanostructured catalysts through the action of the thermally induced O 2À promoters [11][12][13][14], which makes it very promising support material in heterogeneous catalysis [11][12][13][14]. Recently, Vernoux and coworkers carried out isotopic studies of propane combustion on Pt nanoparticles supported on YSZ [15].…”