| People | Locations | Statistics |
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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Hansen, Thomas
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (13/13 displayed)
- 2024Newly developed aerodynamic levitation device for neutron scattering experiments
- 2024Impact of Mn/Ni and Li/(Mn+Ni) ratios on phase equilibrium and electrochemical performance of the high voltage spinel LiNi0.5Mn1.5O4citations
- 2023Magnetic and structural properties of the iron silicide superconductor LaFeSiH
- 2022An Easy-to-Use Custom-Built Cell for Neutron Powder Diffraction Studies of Rechargeable Batteriescitations
- 2022An Easy‐to‐Use Custom‐Built Cell for Neutron Powder Diffraction Studies of Rechargeable Batteriescitations
- 2021Investigation into the magnetic properties of CoFeNiCryCux alloyscitations
- 2021Investigation into the magnetic properties of CoFeNiCryCux alloyscitations
- 2020High-pressure, high temperature synthesis of a mesoporous α-quartz/bismuth nanowire compositecitations
- 2020Structural Characteristics of Fresh, Thermally Aged, Poisoned and Regenerated Pt-Pd Catalysts Studied by Analytical Transmission Electron Microscopy
- 2019High-pressure, high temperature insertion of bismuth in the siliceous zeolite silicalite-1citations
- 2017Absence of magnetic long range order in Y2CrSbO7: bond-disorder induced magnetic frustration in a ferromagnetic pyrochlorecitations
- 2015Expression, receptor binding, and biophysical characterization of guinea pig insulin desB30citations
- 2013Reduction of Sr2MnO4 investigated by high temperature in situ neutron powder diffraction under hydrogen flow.citations
Places of action
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document
Structural Characteristics of Fresh, Thermally Aged, Poisoned and Regenerated Pt-Pd Catalysts Studied by Analytical Transmission Electron Microscopy
Abstract
Transportation is one of the largest emission sources of air pollution. To reduce emissions and to meet emission legislation, efficient exhaust gas purification systems in vehicles are needed. PtPd/Al2O3 based catalysts are commonly used in such purification system in combustion engines. Catalyst deac-tivation caused by thermal aging and poisoning is a significant challenge and strong efforts to further develop durable catalysts are required. Thermal aging is the loss of active surface area due to sintering of the active phase or the support material. Poisoning is due to the adsorption of impurities on the cata-lytically active sites [1]. The highest concentration of contaminants found in the catalysts are typically sulfur and phosphorus originating from engine oil, lubricants, and/or fuels [2]. The reactivation of a sulfur-poisoned catalysts at elevated temperatures is a very important research topic to extend the cata-lyst lifetime. Here, we present case studies to show that analytical (scanning) transmission electron mi-croscopy, (S)TEM, is a very useful characterization tool, combined of course with other techniques, to study aging and regeneration phenomena in catalysts.