A5012080623- Catalytic Processes in Materials Science
- Catalysis and Oxidation Reactions
- Catalysis and Hydrodesulfurization Studies
- Mesoporous Materials and Catalysis
- Polyoxometalates: Synthesis and Applications
- Advanced Photocatalysis Techniques
- Nanomaterials for catalytic reactions
- TiO2 Photocatalysis and Solar Cells
- Catalysis for Biomass Conversion
- Metal-Organic Frameworks: Synthesis and Applications
- Transition Metal Oxide Nanomaterials
- Polymer Surface Interaction Studies
- Synthetic Organic Chemistry Methods
- Catalysts for Methane Reforming
- Metal Extraction and Bioleaching
- Oxidative Organic Chemistry Reactions
- Radioactive element chemistry and processing
- Advanced Nanomaterials in Catalysis
- Gas Sensing Nanomaterials and Sensors
- Chemical Synthesis and Characterization
- Supercapacitor Materials and Fabrication
- Advancements in Battery Materials
- Zeolite Catalysis and Synthesis
- Plasma Applications and Diagnostics
- Electron and X-Ray Spectroscopy Techniques
UCLouvain
2016-2025
Institute for Condensed Matter Physics of the National Academy of Sciences of Ukraine
2014-2017
Institut des Arts de Diffusion
2014-2016
Leibniz Institute for Catalysis
2010
Centre d’Economie rurale
2003
Abstract Carbon nanofibers (CNFs) are a class of graphitic support materials with considerable potential for catalytic conversion biomass. Earlier, we demonstrated the hydrolytic hydrogenation cellulose over reshaped nickel particles attached at tip CNFs. The aim this follow‐up study was to find relationship between acid/metal balance Ni/CNFs and their performance in cellulose. After oxidation incipient wetness impregnation Ni, were characterized by various analytical methods. To prepare...
Supported palladium nanoparticles with different diameters were synthesized by the water-in-oil microemulsion method using TiO2 as support. The materials characterized physicochemical methods such X-ray photoelectron spectroscopy (XPS), inductively coupled plasma atomic emission spectroscopy, diffraction (XRD), transmission electron microscopy (TEM), and H2 chemisorption. results confirmed that permits well-dispersed to be obtained. size of was estimated XPS intensity ratios models proposed...
This paper examines the use of TiO2 nanotubes (HNTs) as supports for V2O5 based catalysts in total oxidation chlorobenzene. The effect addition SO42− onto support is also discussed. Vanadium was introduced either by direct incorporation V during elaboration (in situ elaboration), or impregnation on surface (ex elaboration). obtained have been characterized means ICP-AES, N2 adsorption–desorption at 77 K, XRD, DRIFTS, XPS, H2-TPR and NH3-TPD. We demonstrated that sulfating step highly...
An ZSM-22 aluminosilicate zeolite was synthesized using the hydrothermal gel method at 150 degrees C. Products obtained after different synthesis times were characterized various techniques and catalytic testing. Massive formation of nanocrystals occurs only a short time, appearing as isolated rods with cross section 12+/-4 nm. Nanorods have aluminum enriched their external surface. Later in crystallization process nanorods align fuse sideways, whereby surface is systematically converted...
MoO3-based heterogeneous catalysts prepared by dispersion of Mo-oxide species on preformed supports are highly regarded candidates for industrial light olefin metathesis. An original approach the elaboration Mo-based is presented here. Mesoporous ternary Si/Al/Mo mixed oxides in one step a nonhydrolytic sol−gel route nonaqueous medium. Taking advantage migration Mo during calcination, effective with very good textures and dispersed surface obtained, as shown XRD, XPS, TOF-SIMS...
Ruthenium catalysts supported on TiO2 have been shown to competitive activity and selectivity for the methanation of CO2. In particular, a catalyst using preformed RuO2 nanoparticles deposited support showed performances in previous study. this work, ambient-pressure X-ray photoelectron spectroscopy was employed determine chemical state under reaction conditions. The active ruthenium found be metallic one. Surface adsorbates were monitored steady state, CHx species favored over adsorbed...
The chemical compositions of the surface conditioning layers formed by different types solutions (from isolated EPS to whole culture media), involving bacterial strains relevant for biocorrosion were compared, as they may influence initial step in biofilm formation. Different substrata (polystyrene, glass, steel) conditioned and analyzed X-ray photoelectron spectroscopy. Peak decomposition assignment validated correlations between independent spectral data ubiquitous presence organic...
Abstract The preparation of copper‐based heterogeneous catalysts dedicated to the hydrogenation CO 2 methanol typically relies on multi‐step procedures carried out in batch. These steps are precisely tailored introduce active phase (Cu) and promoters (e. g., zinc, gallium) onto a preformed support maximize catalyst performance. However, each process step can be associated with formation waste consumption energy, thereby negatively impacting environmental performance overall procedure. Here,...
Abstract VO x , CrO and MnO supported on TiO 2 are all efficient catalysts in the total oxidation of benzene. However, chlorobenzene, they exhibit different behaviors terms their resistance to deactivation by chlorinated reactant and/or products reaction (Cl HCl). Precisely: present a very good resistance; conversely, huge an intermediate behavior. This contribution leads better understanding mechanisms origins respective (or deactivation) via postmortem characterization ‘X‐ray photoelectron...