Publication
Advances in Vanadium-Based Catalyst Research for the Selective Catalytic Reduction of NOx by NH₃
Related publications (47)
The simultaneous Selective Catalytic Reduction of N2O and NO over Fe-exchanged zeolites
Iron-exchanged zeolites are industrial heterogeneous catalysts deployed to remediate anthropogenic emissions of both nitrous oxide (N2O) and nitrogen oxides (NOx = NO + NO2). Despite the extensive scientific attention received, limited knowledge is availab ...
EPFL2024Assessing the effect of O2 dithering on CH4 oxidation on Pd/Al2O3
Under periodic lean/rich operation generated by repeated O2 pulses (O2-dithering), the abatement of CH4 and NO is enhanced compared to static operation. However, it is not well understood how the dithering parameters (pulse amplitude and frequency) affect ...
ELSEVIER SCIENCE SA2023Stability and Reactivity of a Polyoxymethylene Dimethyl Ether over Typical Catalysts for Diesel Emission Control
Polyoxymethylene dimethyl ethers (OME) produced from methanol are considered as potential substitutes of Diesel fuel. Emissions of formaldehyde and other components have been observed, particularly under cold-start conditions in engine test-bench experimen ...
SPRINGER/PLENUM PUBLISHERS2022Monomeric Fe Species in Square Planar Geometry Active for Low Temperature NH3-SCR of NO
Monomeric Fe species in zeolites are considered to be the active sites for the low temperature activity toward ammonia-assisted selective catalytic reduction of nitrogen oxides (NH3-SCR) in exhaust gases. Herein, we report on a preparation method to synthe ...
AMER CHEMICAL SOC2022In situ spectroscopic studies of the effect of water on the redox cycle of Cu ions in Cu-SSZ-13 during selective catalytic reduction of NOx
Davide Ferri, Rob Jeremiah G. Nuguid
The effect of water on the NH3-assisted selective catalytic reduction of NOx (NH3-SCR) has been largely neglected, despite the inevitable presence of water vapor in real emissions produced by fuel combustion. In this work, we investigated the role of water ...
ROYAL SOC CHEMISTRY2022Emission reduction by targeted transient operations in three-way catalysts for heavy-duty natural gas applications
To curb the severe effects of climate change, our society needs to radically reduce its CO2 footprint. For the heavy-duty sector, where electrification is difficult, alternative fuels can be the solution. Methane-fueled engines have lower energy-specific C ...
EPFL2022One-pot synthesis of highly dispersed mesoporous Cu/ZrO2 catalysts for NH3-SCR
Davide Ferri, Oliver Kröcher, Rob Jeremiah G. Nuguid
Catalysts consisting of highly dispersed copper on a mesoporous ZrO2 support were synthesised via a one-pot sol-gel synthesis and were tested for the selective catalytic reduction of NOx by NH3. The copper dispersion was investigated by XRD and TEM, which ...
ELSEVIER2022Thermal Sintering and Phosphorus Poisoning of a Layered Diesel Oxidation Catalyst
The tightening emission regulations have led to the development of commercial DOCs with zoned or layered formulations allowing to cover a wide range of functionalities (i.e. CO, HC and NO oxidation as well as HC or NOx trap). Aging phenomena in such comple ...
SPRINGER/PLENUM PUBLISHERS2022Understanding the impact of poison distribution on the performance of Diesel oxidation catalysts
Detailed understanding of the poisoning mechanism in Diesel oxidation catalysts (DOCs) is the key to prevent long term catalyst deterioration in vehicles. The present work studies artificial phosphorus (P) poisoning methods applied to a commercial DOC. Cor ...
ELSEVIER2021Time-Resolved Spectroscopy of Selective Catalytic Reduction (SCR) Catalysts under Transient Conditions
Understanding the mechanisms behind chemical transformations is key to developing improved catalytic systems. To this end, operando spectroscopy has contributed significantly to the advancement of our molecular view of many reactions at the heart of the ch ...
EPFL2021