Experimental and computational analysis of behavior of three-way catalytic converter under axial and radial flow conditions

Review on Post-Treatment Emission Control Technique by Application of Diesel Oxidation Catalysis and Diesel Particulate Filtration

“…Catalysis can be also performed in two stages, out of which initial stage involves reduction of nitrate emissions using rhodium catalyst. The final stage is the reduction of carbon monoxide and unburned hydrocarbons by oxidizing them over platinum and palladium catalyst [17]. Expensive nature of precious metal catalysts have led to doping of non-noble metals into platinum based catalysts [18].…”

Modeling of CO Oxidation by Diffusion of Oxygen Atoms in Ceria-Zirconia Particulates in a Three-Way Catalyst Particle Membrane Filter

“…While mathematical modeling for the diffusion process of ceria at high temperatures (i.e., above 700 °C) has been reported [18-21], the diffusion-controlled oxygen transport process at low-temperatures (i.e., below 250 °C) remains unreported in the existing literature. Furthermore, modeling reaction kinetics in macro-porous conventional catalytic converters [22,23] and three-way catalyst wash-coated lters [24,25] have been extensively discussed in the literature. This study primarily focuses on the oxygen transport process in primary ceria-zirconia (CZ) particulates, which are heterogeneously agglomerated within spherical three-way catalyst particles as part of the reaction kinetics.…”

Modeling of CO Oxidation by Diffusion of Oxygen Atoms in Ceria-Zirconia Particulates in a Three-Way Catalyst Particle Membrane Filter

“…For the conventional TWC wash-coated filters [18,19] and the conventional catalytic converters [20,21], the macroscopic reaction kinetics modelling has been extensively developed and the microscopic transport of oxygen atoms in ceria has been reported [22 -25] under the condition of the practical temperature above 700°C. However, if the thermal efficiency of engines for passenger's vehicles can be increased up to more than 50% (already reached up to 52.63%) to reduce emission of CO 2 , the exhaust gas temperature at the engine out will be decreased around 300°C to 400°C [26].…”