EFFECT OF COMPOSITION AND PREPARATION METHOD OF (Pd), Co, Ce, Zr - METAL-OXIDE CATALYSTS ON THEIR ACTIVITY IN THE REDUCTION OF NITROGEN(I), (II) OXIDES WITH CARBON MONOXIDE
نویسنده
چکیده
Among the studied (Pd), Co-, Ce-, Zr-oxide catalysts including catalysts deposited on structured cordierite support, the catalyst prepared by co-deposition of ceria and cobalt oxide is characterized by higher activity in reaction of reduction of nitrogen(I), (II) oxides (CO + NO, N2O + NO + CO) compared with samples prepared by successive deposition. This may be caused by an increase in both mobility of surface oxygen and dispersity of components in the catalytic composition.
منابع مشابه
Molecular Mixed-Metal Manganese Oxido Cubanes as Precursors to Heterogeneous Oxygen Evolution Catalysts.
Well-defined mixed-metal [CoMn3 O4 ] and [NiMn3 O4 ] cubane complexes were synthesized and used as precursors for heterogeneous oxygen evolution reaction (OER) electrocatalysts. The discrete clusters were dropcasted onto glassy carbon (GC) and indium tin oxide (ITO) electrodes, and the OER activities of the resulting films were evaluated. The catalytic surfaces were analyzed by various techniqu...
متن کاملDeactivation of Cu - Cr/γ-alumina Catalysts for Combustion of Exhaust Gases
The paper relates to a catalyst, comprising copperchromium spinel, coated on carrier γ-Al2O3. The effect of preparation conditions on the active component composition and activity behavior of the catalysts is discussed. It was found that the activity of carbon monoxide, DME, formaldehyde and methanol oxidation reaches a maximum at an active component content of 20 – 30 wt. %. Temperature calcin...
متن کاملPreparation of PdCu Alloy Nanocatalysts for Nitrate Hydrogenation and Carbon Monoxide Oxidation
Alloying Pd with Cu is important for catalytic reactions such as denitrification reaction and CO oxidation reaction, but understanding of the catalyst preparation and its correlation with the catalyst’s activity and selectivity remains elusive. Herein, we report the results of investigations of the preparation of PdCu alloy nanocatalysts using different methods and the catalytic properties of t...
متن کاملPreparation, Structure and Selected Catalytic Properties of La2CuO4 Nano Mixed Metal Oxides
The perovskite-structured La2CuO4 nanoparticles have been synthesized via an ultrasonic-assisted co-precipitation route using octanoic acid as organic surfactant, and the phase composition, morphology, lattice parameters and size of nanoparticles are characterized through Fourier transform infrared spectrosco...
متن کاملLow-temperature carbon monoxide oxidation with Au-Cu meatball-like cages prepared by galvanic replacement.
Owing to intrinsic scientific interest and its immense importance in catalysis technology, the oxidation of carbon monoxide has attracted much attention in the past few decades. The reaction is effectively catalyzed by certain noble metals, such as gold, platinum, palladium, and rhodium. Among all of these metals, gold exhibits an extraordinarily high activity because CO molecules adsorb strong...
متن کامل