Optimizing feed modulation for coupled methane and NOx conversion over Pd-Pt/Mn0.5Fe2.5O4/Al2O3 monolith catalyst

Investigation of the evolution of Pd-Pt supported on ceria for dry and wet methane oxidation

“…Palladium-platinum-based materials, alone or in combination with Rh, are the state-of-the-art catalysts for different after-treatment systems of the exhausts from mobile sources [1][2][3][4] . Bimetallic formulations containing Pd and Pt are used on natural-gas-fueled vehicles (NGVs) for the abatement of unburned methane [5][6][7] , which is a powerful greenhouse gas with a global warming potential 86 times that of CO 2 on a 20-year period, and 34 times higher on a 100-year horizon 8 . Due to the exponential growth of NGVs in the last few years, boosted also by the increase in the renewable natural gas-fueled vehicles 9,10 , addressing and decreasing methane emissions to the atmosphere has become of increasing concern and the optimization of the catalytic system has attracted growing interest 7,11,12 .…”

“…Bimetallic formulations containing Pd and Pt are used on natural-gas-fueled vehicles (NGVs) for the abatement of unburned methane [5][6][7] , which is a powerful greenhouse gas with a global warming potential 86 times that of CO 2 on a 20-year period, and 34 times higher on a 100-year horizon 8 . Due to the exponential growth of NGVs in the last few years, boosted also by the increase in the renewable natural gas-fueled vehicles 9,10 , addressing and decreasing methane emissions to the atmosphere has become of increasing concern and the optimization of the catalytic system has attracted growing interest 7,11,12 . The addition of platinum to Pd-based catalysts, which are widely recognized as the most active for methane oxidation, has proved to be effective in improving the catalyst stability against sulfur poisoning [13][14][15] and deactivation induced by the large steam content present in the exhausts [16][17][18][19] .…”

Proposal for New Development Environment Based on Digital Materials and a Case Study of Gasoline Particulate Filter

“…It is reported that the integration of the GPF and the three-way catalyst (catalysts for CO, unburned HC, and NOx) used in gasoline vehicles is a current challenge. That is, a catalyst-supported GPF (or called four-way catalyst) is desirable in the exhaust gas after-treatment system [9]. However, conventional empirical design methods based on a trial-and-error cannot provide innovative progress.…”

Significant Reduction of the Formation of N2O and NH3 on an Efficient Three-Way PtRh Catalyst Modified by LaFeCu Perovskite

“…In recent years, with the increase in gasoline and diesel vehicles, air pollution has been getting worse, and vehicles powered by new energy and alternative energy will play an increasingly important role. Methane (CH 4 ), as the main composition of natural gas, produces less carbon dioxide than any other fossil fuel after combustion. , As a result, natural gas has become a very promising alternative fuel for vehicles. , However, the pollutants of CH 4 , CO, and NO x from stoichiometric natural gas-fueled engines must be simultaneously converted to CO 2 , H 2 O, and N 2 by three-way catalysts. Nevertheless, NH 3 and N 2 O are always formed during catalytic reaction .…”

“…Methane (CH 4 ), as the main composition of natural gas, produces less carbon dioxide than any other fossil fuel after combustion. 1,2 As a result, natural gas has become a very promising alternative fuel for vehicles. 3,4 However, the pollutants of CH 4 , CO, and NO x from stoichiometric natural gas-fueled engines must be simultaneously converted to CO 2 , H 2 O, and N 2 by three-way catalysts.…”