Selective catalytic oxidation of ammonia into nitrogen and water vapour over transition metals modified Al2O3, TiO2 and ZrO2

Abstract

Copper or iron supported on commercially available oxides, such as γ-Al

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

“…specific surface areas comparing to the commercial oxides [3]. Deposition of noble metals, especially rhodium further decreased the specific surface areas of the oxides.…”

“…For both modified titania or zirconia reduction of PtO x or PdO x species were not identified mainly due to partial reduction of oxide supports [3]. Additionally, noble metals supported on…”

“…Previous studies described physicochemical characterization of copper-or iron-containing commercially available oxides, such as -Al 2 O 3 , TiO 2 (anatase) and mt-ZrO 2 as well as their catalytic performance in both NH 3 -SCO and NH 3 -SCR processes [3]. In the following studies the deposition of selected noble metals, such as Pt, Pd, Rh, on the surface of transition metal oxide modified catalysts will be discussed.…”

“…Powder XRD diffraction patterns obtained for the commercial oxides and their impregnated with transition metals derivatives were presented earlier [3]. with the support [8,9].…”

“…The results of H 2 -TPR studies of the commercial oxides containing copper or iron oxide catalysts were described previously [3]. …”