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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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Gloter, Alexandre
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (27/27 displayed)
- 2024Polar discontinuity governs surface segregation and interface termination: A case study of LaInO$_3$/BaSnO$_3$citations
- 2024Origin of the Surface Magnetic Dead Layer in Rare‐Earth Titanates
- 2024Unraveling P‐Type and N‐Type Interfaces in Superconducting Infinite‐Layer Nickelate Thin Filmscitations
- 2024Polar discontinuity governs surface segregation and interface termination: A case study of LaIn O3/ BaSn O3
- 2024Toward Reliable Synthesis of Superconducting Infinite Layer Nickelate Thin Films by Topochemical Reductioncitations
- 2024Toward Reliable Synthesis of Superconducting Infinite Layer Nickelate Thin Films by Topochemical Reductioncitations
- 2024Valence-Ordered Thin-Film Nickelate with Tri-component Nickel Coordination Prepared by Topochemical Reductioncitations
- 2023Plasmonic Properties of SrVO Bulk and Nanostructurescitations
- 2023Mapping the complex evolution of ferroelastic/ferroelectric domain patterns in epitaxially strained PbTiO3 heterostructurescitations
- 2023Strontium-driven physiological to pathological transition of bone-like architecture: A dose-dependent investigationcitations
- 2023Synthesis of infinite-layer nickelates and influence of the capping-layer on magnetotransportcitations
- 2022Strain tuning of Néel temperature in YCrO 3 epitaxial thin filmscitations
- 2021Depth profile reconstruction of YCrO3 / CaMnO3 superlattices by near total reflection HAXPEScitations
- 2021Surface and bulk ferroelectric phase transition in super-tetragonal BiFeO 3 thin filmscitations
- 2020Evolution of structural and magnetic properties of multifunctional bismuth iron garnets upon Ca and Y dopingcitations
- 2020Role of point and line defects on the electronic structure of LaAlO3/SrTiO3 interfacescitations
- 2019Room Temperature Blocked Magnetic Nanoparticles Based on Ferrite Promoted by a Three-Step Thermal Decomposition Processcitations
- 2017In-situ determination of the kinetics and mechanisms of nickel adsorption by nanocrystalline vernaditecitations
- 2013Direct Evidence of Fe2+-Fe3+ Charge Ordering in the ferrimagnetic Hematite-Ilmenite Fe1.35Ti0.65O3 -d Thin Filmscitations
- 2011Nanoscale chemical and structural study of Co-based FEBID structures by STEM-EELS and HRTEM
- 2011Nanoscale chemical and structural study of Co- based FEBID structures by STEM-EELS and HRTEMcitations
- 2010Synthesis and Cathodoluminescence of Undoped and Cr^3^+-Doped Sodium Titanate Nanotubes and Nanoribbonscitations
- 2010Synthesis and cathodoluminescence of undoped and Cr^(3+)-doped Sodium Titanate nanotubes and nanoribbonscitations
- 2009Insights into the mechanism of the gas-phase purification of HiPco SWNTs through a comprehensive multi-technique studycitations
- 2009Segregation tendency in layered aluminum-substituted lithium nickel oxidescitations
- 2008Geometric and electronic structure of alpha-oxygen sites in Mn-ZSM-5 zeolitescitations
- 2008Geometric and electronic structure of alpha-oxygen sites in Mn-ZSM-5 zeolites
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article
Geometric and electronic structure of alpha-oxygen sites in Mn-ZSM-5 zeolites
Abstract
It is shown that alpha-oxygen sites are generated by the decomposition of N2O in ion-exchanged Mn-ZSM-5 zeolites. The catalytic activity decreases to zero in 1 h, and the amount of alpha-oxygen that is formed is reduced from similar to 30% alpha-oxygen sites per Mn atom in the initial N2O treatment to a value of similar to 4% in the subsequent cycles. The catalytic activity correlates with the intensity of a UV-vis band located at 18 500 cm(-1), suggesting that the alpha-oxygen sites are linked to Mn sites with a distorted tetragonal symmetry with extended Mn-O bonds with respect to bulk oxides. Scanning transmission electron microscopy with electron energy loss spectroscopy (STEM-EELS) results indicate that the Mn sites are distributed unevenly over the ZSM-5 crystals, where most Mn atoms are found in the top similar to 2 nm from the crystal surface. The X-ray absorption spectroscopy (XAS) spectra indicate that, under reaction conditions, the Mn atoms have a 5-fold coordination and a valence of similar to 2.5, which is little affected by the N2O and NO treatments as only similar to 4% of these sites is active.