CO Oxidation below Room Temperature over Ir/TiO2 Catalyst Prepared by Deposition Precipitation Method

More active Ir subnanometer clusters than single‐atoms for catalytic oxidation of CO at low temperature

“…It was found that the H 2 reduction treatment led to the evolution of the support Fe(OH) x to FeO x , which greatly promoted the adsorption of O 2 . Moreover, the valence of Ir species was decreased from positive to metallic state . However, the size of Ir species from subnanometer clusters to single‐atoms during the reduction treatment and its effect on the adsorption and reaction of CO, O 2 , and H 2 was not concerned in these studies.…”

Platinum surface modification with cerium species and the effect against the methanol anodic reaction

“…There are several reports describing the use of noble metals for carbon monoxide oxidation at ambient temperatures [41][42][43]. The high cost of noble metals and their sensitivity to sulfur poisoning have stimulated the search for substitute catalysts.…”

Deposition Precipitation

“…For example, Augustine and Leary [32] have prepared in this way 1 wt% Pd/MgO with a final Pd dispersion of 40%. Deposition of Ir-precursor onto TiO 2 was realized [33] by dispersion of the support in an aqueous solution of IrCl 4 the pH of which was adjusted to 8 by addition of NaOH solution. After work-up and calcination in air at 400 • C it was found that Ir or IrO 2 had been deposited as a thin layer of about 2 nm thick onto the TiO 2 support.…”