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1. ToF-SIMS and XPS characterizations of model fission products (I, Cs) deposits after thermal treatment simulating late phase conditions of a nuclear power plant severe accident

Author

Le Fessant Elouan, Gregoire Anne-Cécile, Nuns Nicolas, Simon Pardis, Mamede Anne-Sophie, Paul Jean-François, and Cantrel Laurent

Subjects
xps, tof-sims, revaporization, csi, Physics, QC1-999
Abstract

During a Severe Accident (SA) occurring in a nuclear power plant, many Fission Products (FP) are released from the degraded fuel and are transported in the Reactor Coolant System (RCS). Depending on their volatility, FP can be either deposited on the surface of the Reactor Coolant System (RCS) or transported into the containment building from where they may be released into the environment in case of early containment failure. This was the case for the Fukushima Daiichi (FD) accident with important FP releases which were observed following the containment vessel failure which lasted up to several weeks after the accident. If early phase releases were well predicted by SA simulation codes, delayed releases were not correctly predicted [1]. Such discrepancies can be attributed to the revaporization of deposits inside the RCS which were not yet modeled in the SA simulation tools. Previous experiments over the past 20 years evidenced the possible formation and revaporization of CsI [2]. However, up to now, no clear CsI revaporization mechanism has been determined. In order to propose a mechanism, this study (scheduled within the OECD/NEA/ESTER project) aims at determining the speciation of each species remaining on the substrate after revaporization tests under different conditions using XPS and ToF-SIMS (X-ray Photoelectron Spectroscopy and Time of Flight Secondary Ion Mass Spectrometry. These two combined techniques allow the identification of the main species of the residue leading to the proposition of two revaporization reactions.

Published
2022
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9. SBA‐15 Supported Ni‐Cu Catalysts for Hydrodeoxygenation of m‐cresol to Toluene.

Author

Deplazes, Roger, Teles, Camila Abreu, Ciotonea, Carmen, Simon, Pardis, El Rassi, Elias, Dhainaut, Jérémy, Marinova, Maya, Canilho, Nadia, Richard, Frédéric, and Royer, Sébastien

Subjects
BIMETALLIC catalysts, CATALYST supports, COPPER, MESOPOROUS silica, AROMATIC compounds, TOLUENE
Abstract

Amidst concerns over fossil fuel dependency and environmental sustainability, the utilization of biomass‐derived aromatic compounds emerges as a viable solution across diverse industries. In this scheme, the conversion of biomass involves pyrolysis, followed by a hydrodeoxygenation (HDO) step to reduce the oxygen content of pyrolysis oils and stabilize the end products including aromatics. In this study, we explored the properties of size controlled NiCu bimetallic catalysts supported on ordered mesoporous silica (SBA‐15) for the catalytic gas‐phase HDO of m‐cresol, a lignin model compound. We compared their performances with monometallic Ni and Cu catalysts. The prepared catalysts contained varying Ni to Cu ratios and featured an average particle size of approximately 2 nm. The catalytic tests revealed that the introduction of Cu alongside Ni enhanced the selectivity for the direct deoxygenation (DDO) pathway, yielding toluene as the primary product. Optimal performance was observed with a catalyst composition comprising 5 wt.% Ni and 5 wr.% Cu, achieving 85 % selectivity to toluene. Further increasing the Cu content improved turnover frequency (TOF) values, but reduced DDO selectivity. These findings underscore the importance of catalyst design in facilitating biomass‐derived compound transformations and offer insights into optimizing catalyst composition for more selective HDO reactions. [ABSTRACT FROM AUTHOR]

Published
2025
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14. Boosting Gas-Phase TiO2 Photocatalysis with Weak Electric Field Strengths of Volt/Centimeter

Author

Tran, My Nghe, primary, Moreau, Myriam, additional, Addad, Ahmed, additional, Teurtrie, Adrien, additional, Roland, Thomas, additional, de Waele, Vincent, additional, Dewitte, Marc, additional, Thomas, Louis, additional, Levêque, Gaëtan, additional, Dong, Chunyang, additional, Simon, Pardis, additional, Ben Tayeb, Karima, additional, Mele, David, additional, Ordomsky, Vitaly, additional, and Grandidier, Bruno, additional

Published
2024
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19. Water-Based Synthesis of Zr6-Based Metal–Organic Framework Nanocrystals with Sulfonate Functions: Structural Features and Application to Fructose Dehydration

Author

Yeskendir, Bakytzhan, primary, de Souza, Priscilla M., additional, Simon, Pardis, additional, Wojcieszak, Robert, additional, Courtois, Christian, additional, Lorgouilloux, Yannick, additional, Royer, Sébastien, additional, Dacquin, Jean-Philippe, additional, and Dhainaut, Jérémy, additional

Published
2022
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26. Micro-dispositifs de stockage haute puissance tout solide: rêve ou réalité ?

Author

Lethien, Christophe, Taberna, P.L., Roussel, Pascal, Favier, F., Le Bideau, J., Simon, Pardis, Dunn, Bruce, Brousse, Thierry, Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), Université catholique de Lille (UCL)-Université catholique de Lille (UCL), Circuits Systèmes Applications des Micro-ondes - IEMN (CSAM - IEMN ), Université catholique de Lille (UCL)-Université catholique de Lille (UCL)-Centrale Lille-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-JUNIA (JUNIA), Réseau sur le stockage électrochimique de l'énergie (RS2E), Université de Nantes (UN)-Aix Marseille Université (AMU)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Collège de France (CdF (institution))-Université de Picardie Jules Verne (UPJV)-Ecole Nationale Supérieure de Chimie de Montpellier (ENSCM)-Ecole Nationale Supérieure de Chimie de Paris - Chimie ParisTech-PSL (ENSCP), Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Université de Pau et des Pays de l'Adour (UPPA)-Institut de Chimie du CNRS (INC)-Université de Montpellier (UM)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université de Toulouse (UT)-Université de Toulouse (UT)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP ), Université Grenoble Alpes (UGA)-Université Grenoble Alpes (UGA), Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Institut des Matériaux Jean Rouxel (IMN), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Nantes université - UFR des Sciences et des Techniques (Nantes univ - UFR ST), Nantes Université - pôle Sciences et technologie, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - pôle Sciences et technologie, Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ)-Nantes Université - Ecole Polytechnique de l'Université de Nantes (Nantes Univ - EPUN), Nantes Université (Nantes Univ)-Nantes Université (Nantes Univ), Renatech Network, CMNF, PCMP PCP, and Université de Lille, LillOA

Subjects
[CHIM.INOR] Chemical Sciences/Inorganic chemistry, [CHIM.INOR]Chemical Sciences/Inorganic chemistry, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2021

27. Mn- or Cu- substituted LaFeO3-based three-way catalysts: Highlighting different catalytically operating modes of La0.67Fe0.8M0.2O3 (M=Cu, Mn)

Author

Nandi, Shreya, primary, Wu, Jiang Xiang, additional, Simon, Pardis, additional, Nuns, Nicolas, additional, Trentesaux, Martine, additional, Tougerti, Asma, additional, Fonda, Emiliano, additional, Girardon, Jean-Sébastien, additional, Paul, Jean-François, additional, Mamede, Anne-Sophie, additional, and Berrier, Elise, additional

Published
2021
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29. Carbon-based catalysts for Fischer–Tropsch synthesis

Author

Ordomsky, Vitaly, Wang, Qiyan, Zhou, Wen-Juan, Heyte, Svetlana, Thuriot-Roukos, Joëlle, Marinova, Maya, Addad, Ahmed, Rouzière, Stéphan, Simon, Pardis, Capron, Mickael, Zhang, Linjie, Grimaud, Alexis, Schwiedernoch, Renate, Hernández, Willinton Yesid, Naghavi, Negar, Pedrolo, Débora, Schwaab, Marcio, Marcilio, Nilson, Khodakov, Andrei, Santos, Sara, Urbina-Blanco, César, Zhou, Wenjuan, Yang, Yong, Joelle, Thuriot-Roukos, Ersen, Ovidiu, Baaziz, Walid, Safonova, Olga, Saeys, Mark, Gu, Bang, Peron, Deizi, Barrios, Alan, Virginie, Mirella, La Fontaine, Camille, Briois, Valérie, Vorokhta, Mykhailo, Šmíd, Břetislav, Moldovan, Simona, Koneti, Siddardha, Gambu, Thobani, Hernández, Willinton, Impéror-Clerc, Marianne, Vovk, Evgeny, Wu, Dan, Nuns, Nicolas, Palčić, Ana, Jaén, Sara Navarro, Cai, Mengdie, Liu, Chong, Pidko, Evgeny, Valtchev, Valentin, Yan, Zhen, Zhang, Songwei, Li, Jerry Pui Ho, Zhao, Jingpeng, Yuan, Biao, He, Tao, Yu, Yi, Li, Tao, Hu, Di, Chen, Yanping, Wei, Jiatong, Duyar, Melis, Liu, Jian, Dalian Institute of Chemical Physics - Chinese Academy of Sciences, University of Surrey (UNIS), Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), ANR-16-CE06-0013,NANO4FuT,Synthèse des carburants alternatifs et des molécules plateforme sur nanoréacteurs(2016), CNRS, Centrale Lille, ENSCL, Univ. Artois, Université de Lille, Unité de Catalyse et Chimie du Solide (UCCS) - UMR 8181, Ordomsky, Vitaly, Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Eco-Efficient Products &Processes Laboratory (E2PL2), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-RHODIA, Laboratoire de Chimie - UMR5182 (LC), Centre National de la Recherche Scientifique (CNRS)-Université Claude Bernard Lyon 1 (UCBL), Université de Lyon-Université de Lyon-École normale supérieure - Lyon (ENS Lyon)-Institut de Chimie du CNRS (INC), Institut Michel Eugène Chevreul - FR 2638 (IMEC), Université d'Artois (UA)-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Centrale Lille Institut (CLIL), Unité Matériaux et Transformations - UMR 8207 (UMET), Institut de Chimie du CNRS (INC)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS)-Université de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL), Laboratoire de Physique des Solides (LPS), Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Chimie du solide et de l'énergie (CSE), Collège de France (CdF (institution))-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)-Centre National de la Recherche Scientifique (CNRS), Solvay (France), Instituto Federal do Rio Grande do Sul (IFRS), Institut de Physique et Chimie des Matériaux de Strasbourg (IPCMS), Université de Strasbourg (UNISTRA)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA), Institut de chimie et procédés pour l'énergie, l'environnement et la santé (ICPEES), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS), Paul Scherrer Institute (PSI), Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), Charles University [Prague] (CU), Groupe de physique des matériaux (GPM), Centre National de la Recherche Scientifique (CNRS)-Institut national des sciences appliquées Rouen Normandie (INSA Rouen Normandie), Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Institut National des Sciences Appliquées (INSA)-Normandie Université (NU)-Université de Rouen Normandie (UNIROUEN), Normandie Université (NU), Ruđer Bošković Institute (IRB), Delft University of Technology (TU Delft), Laboratoire catalyse et spectrochimie (LCS), Centre National de la Recherche Scientifique (CNRS)-École Nationale Supérieure d'Ingénieurs de Caen (ENSICAEN), Normandie Université (NU)-Normandie Université (NU)-Institut de Chimie du CNRS (INC)-Université de Caen Normandie (UNICAEN), ShanghaiTech University [Shanghai], Beihang University (BUAA), School of Physics Science and Engineering, Tongji University, Université de Strasbourg (UNISTRA)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Réseau nanophotonique et optique, Université de Strasbourg (UNISTRA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Matériaux et nanosciences d'Alsace (FMNGE), Institut de Chimie du CNRS (INC)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS)-Université de Strasbourg (UNISTRA)-Université de Haute-Alsace (UHA) Mulhouse - Colmar (Université de Haute-Alsace (UHA))-Institut National de la Santé et de la Recherche Médicale (INSERM)-Centre National de la Recherche Scientifique (CNRS), Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Eco-Efficient Products & Processes Laboratory (E2P2L), RHODIA-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), and Centre National de la Recherche Scientifique (CNRS)-Collège de France (CdF (institution))-Institut de Chimie du CNRS (INC)-Sorbonne Université (SU)

Subjects
Materials science, chemistry.chemical_element, 02 engineering and technology, Carbon nanotube, 010402 general chemistry, 01 natural sciences, 7. Clean energy, law.invention, Catalysis, law, [CHIM] Chemical Sciences, medicine, [CHIM]Chemical Sciences, Coal, Gasoline, Carbon nanofiber, business.industry, Fischer–Tropsch process, General Chemistry, 021001 nanoscience & nanotechnology, 0104 chemical sciences, Chemical engineering, chemistry, 0210 nano-technology, business, Carbon, Activated carbon, medicine.drug
Abstract

International audience; Fischer-Tropsch synthesis (FTS) is an essential approach to convert coal, biomass, and shale gas into fuels and chemicals, such as lower olefins, gasoline, diesel, and so on. In recent years, there has been increasing motivation to deploy FTS at commercial scales which has been boosting the discovery of high performance catalysts. In particular, the importance of support in modulating the activity of metals has been recognized and carbonaceous materials have attracted attention as supports for FTS. In this review, we summarised the substantial progress in the preparation of carbon-based catalysts for FTS by applying activated carbon (AC), carbon nanotubes (CNTs), carbon nanofibers (CNFs), carbon spheres (CSs), and metal-organic frameworks (MOFs) derived carbonaceous materials as supports. A general assessment of carbon-based catalysts for FTS, concerning the support and metal properties, activity and products selectivity, and their interactions is systematically discussed. Finally, current challenges and future trends in the development of carbon-based catalysts for commercial utilization in FTS are proposed.

Published
2021
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31. Mn- or Cu- substituted LaFeO 3 -based three-way catalysts: Highlighting different catalytically operating modes of La 0.67 Fe 0.8 M 0.2 O 3 (M=Cu, Mn)

Author

Nandi, Shreya, Wu, Jiang Xiang, Simon, Pardis, Nuns, Nicolas, Trentesaux, Martine, Tougerti, Asma, Fonda, Emiliano, Girardon, Jean-Sébastien, Paul, Jean-François, Mamede, Anne-Sophie, Berrier, Elise, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Synchrotron SOLEIL (SSOLEIL), Centre National de la Recherche Scientifique (CNRS), and Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)

Subjects
Raman spectroscopy, XPS, Three-way catalysis, Operando, [CHIM.CATA]Chemical Sciences/Catalysis, Perovskite
Abstract

International audience; The present work aims at presenting our investigations on the redox behaviour of Cu-or Mndoped LaFeO 3-based perovskite powders under three-way catalysis (TWC) relevant conditions. Two distinct La-deficient catalysts of generic formula La 0.67 Fe 0.8 Mn 0.2 O 3 and La 0.67 Fe 0.8 Cu 0.2 O 3 denoted as Mn-dLFO and Cu-dLFO, respectively, were prepared based on the conventional citrate complexation route and systematically investigated using complementary characterisation techniques. This study has made it possible to highlight fundamentally different structures. In Cu-dLFO, most Cu 2+ cations are expelled from the LaFeO 3 perovskite lattice in the form of a segregated CuO phase. On the other hand, in the case of Mn-dLFO, majority of Mn 3+ cations are stabilised within the perovskite solid solution, while substantial iron exsolution in the form of an additional α-Fe 2 O 3 phase was evidenced. The evolution of both catalysts during CO-TPR using operando Raman revealed the formation of polycyclic aromatic hydrocarbons (PAHs) besides the relative structural stability of the LaFeO 3 lattice. The reduction of Mn 3+ to Mn 2+ , indirectly suggested by Raman analysis, is further supported by a quasi-in situ XPS study. The latter also evidenced the reduction of CuO to metal copper to a large extent in Cu-dLFO. In addition, a share of the α-Fe 2 O 3 phase present in Mn-dLFO is reduced to metal Fe 0 during CO oxidation, and is fully re-oxidised upon NO reduction. Our investigation thus evidences that both copper and manganese sites in Cu-dLFO and Mn-dLFO, respectively, are redox-active centres upon CO oxidation / NO reduction with, however, varying operating modes underpinned by their fundamentally different structures.

Published
2021
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32. Water-Based Synthesis of Zr6‑Based Metal–Organic Framework Nanocrystals with Sulfonate Functions: Structural Features and Application to Fructose Dehydration.

Author

Yeskendir, Bakytzhan, de Souza, Priscilla M., Simon, Pardis, Wojcieszak, Robert, Courtois, Christian, Lorgouilloux, Yannick, Royer, Sébastien, Dacquin, Jean-Philippe, and Dhainaut, Jérémy

Abstract

A series of zirconium-based metal–organic framework (MOF) nanocrystals (95–211 nm) displaying sulfonate functions (UiO-66-SO3H) was prepared in N,N-dimethylformamide (DMF)the conventional solventand water, and their physicochemical properties were thoroughly investigated. In particular, X-ray diffraction results suggest that upon replacing DMF with water, the resulting MOF crystal structure presents a highly defective structure belonging to the space group Im3̅ instead of typical Fm3̅m. The acid catalysts were applied to the fructose dehydration into 5-hydroxymethylfurfural (5-HMF). Complete conversion of fructose over UiO-66-SO3H prepared in water was reached after only 30 min at 100 °C, in line with its stronger Brønsted acidity. In comparison, its counterpart prepared in DMF showed only 30% fructose conversion. Moreover, the intrinsic catalytic effect at 80 °C was only observed with the water-based UiO-66-SO3H. Without reactivation of the catalyst, recycling tests demonstrated the preservation of its structural integrity upon nine consecutive cycles, while a gradual loss of the catalyst activity was attributed to the humin adsorption on the MOFs. [ABSTRACT FROM AUTHOR]

Published
2022
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37. Study of the genesis of HDS catalysts by in situ photon in photon out spectroscopy

Author

Tougerti, Asma, Simon, Pardis, Desjasques, Charlotte, Girardon, Jean-Sébastien, Mazzanti, Francesco, Pipolo, Silvio, Trentesaux, Martine, Cristol, Sylvain, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), and Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille

Subjects
[CHIM.THEO]Chemical Sciences/Theoretical and/or physical chemistry, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2019

38. An unusual O2−/F− distribution in the new pyrochlore oxyfluorides: Na2B2O5F2 (B = Nb, Ta).

Author

Boivin, Edouard, Pourpoint, Frédérique, Saitzek, Sébastien, Simon, Pardis, Roussel, Pascal, and Kabbour, Houria

Subjects
OXYFLUORIDES, PYROCHLORE, N-type semiconductors
Abstract

Two new oxyfluorides with a pyrochlore-type structure, Na2Nb2O5F2 and Na2Ta2O5F2, have been obtained, for which the XRD crystallographic study coupled with 19F solid state NMR reveals an unusual O/F distribution. Both materials are n-type semiconductors exhibiting photoconductive properties. [ABSTRACT FROM AUTHOR]

Published
2022
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41. Novel insights into the charge storage mechanism in pseudocapacitive vanadium nitride thick films for high-performance on-chip micro-supercapacitors

Author

Robert, Kevin, primary, Stiévenard, Didier, additional, Deresmes, Dominique, additional, Douard, Camille, additional, Iadecola, Antonella, additional, Troadec, David, additional, Simon, Pardis, additional, Nuns, Nicolas, additional, Marinova, Maya, additional, Huvé, Marielle, additional, Roussel, Pascal, additional, Brousse, Thierry, additional, and Lethien, Christophe, additional

Published
2020
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42. LaFeO 3 Thin Films as Relevant TWC Models Surface Materials

Author

Nandi, Shreya, Blanck, Dimitri, Carlier, Thomas, Chambrier, Marie-Hélène, Mamede, Anne-Sophie, Trentesaux, Martine, Simon, Pardis, Nuns, Nicolas, Roussel, Pascal, Ferri, Anthony, Paul, Jean-François, Berrier, Elise, Unité de Catalyse et de Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Ecole Centrale de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Institut des Molécules et de la Matière Condensée de Lille (IMMCL), Université de Lille, Sciences et Technologies-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Centre National de la Recherche Scientifique (CNRS), Unité de Catalyse et de Chimie du Solide - Site Artois (UCCS Artois), Université d'Artois (UA)-Université de Lille, Sciences et Technologies-Ecole Centrale de Lille-Ecole Nationale Supérieure de Chimie de Lille (ENSCL)-Centre National de la Recherche Scientifique (CNRS), Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, UCCS Équipe Couches Minces & Nanomatériaux, Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille-Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Laboratoire Francis PERRIN (LFP - URA 2453), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Centrale Lille Institut (CLIL)-Centre National de la Recherche Scientifique (CNRS)-Université de Lille, Sciences et Technologies, Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), Université de Lille, Sciences et Technologies-Centre National de la Recherche Scientifique (CNRS)-Centrale Lille Institut (CLIL), Berrier, Elise, and Université de Lille, Sciences et Technologies-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)

Subjects
XPS, [CHIM.CATA] Chemical Sciences/Catalysis, LEIS, [CHIM.CATA]Chemical Sciences/Catalysis, ToF-SIMS, Raman, LaFeO 3, perovskite, ComputingMilieux_MISCELLANEOUS
Abstract

International audience; Lanthanum orthoferrite, a highly potential three-way catalyst, shaped as apolycrys-talline thin film has been comprehensively analysed by combining bulk and surface characterization techniques. The possibility to accomplish unprecedented surface information has been presented, thanks to the combined use of LEIS, XPS and ToF-SIMS. The structural, morphological and surface properties at nano-metric scale make such thin films indistinguishable from powdered solids. Thus, 5 the relevance of using such model materials for advanced surface investigations of LaFeO 3±δ-based three-way catalysts has been demonstrated.

Published
2018
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43. FeMo-based catalysts for acrolein production : an in situ X-ray Photoelectron Spectroscopy study

Author

Simon, Pardis, Mamede, Anne-Sophie, Trentesaux, Martine, Borowiec, Anita, Capron, Mickael, Dumeignil, Franck, Gallet, Jean-Jacques, Bournel, Fabrice, Paul, Jean-Francois, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), and Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille

Subjects
[CHIM.CATA]Chemical Sciences/Catalysis, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

44. Cobalt(II) catalysts applied to the hydrosilylation of esters for the sustainable synthesis of bulk and fine chemicals intermediates

Author

Rysak, Vincent, Simon, Pardis, Blanchard, Florent, Agbossou-Niedercorn, Francine, Michon, Christophe, Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS), and Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille

Subjects
[CHIM.COOR]Chemical Sciences/Coordination chemistry, ComputingMilieux_MISCELLANEOUS
Abstract

National audience

Published
2018

45. Vanadium and tungsten nitride thin film electrodes for micro-supercapacitor

Author

Robert, Kevin, Ouendi, Saliha, Douard, Camille, Iadecolla, A., Simon, Pardis, Nuns, Nicolas, Roussel, Pascal, Le Bideau, J., Brousse, Thierry, Lethien, Christophe, Institut d’Électronique, de Microélectronique et de Nanotechnologie - UMR 8520 (IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Centrale de Micro Nano Fabrication - IEMN (CMNF-IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF), Unité de Catalyse et Chimie du Solide - UMR 8181 (UCCS), Centrale Lille Institut (CLIL)-Université d'Artois (UA)-Centrale Lille-Centre National de la Recherche Scientifique (CNRS)-Institut de Chimie du CNRS (INC)-Université de Lille, Circuits Systèmes Applications des Micro-ondes - IEMN (CSAM - IEMN), Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Centrale Lille-Institut supérieur de l'électronique et du numérique (ISEN)-Université de Valenciennes et du Hainaut-Cambrésis (UVHC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)-Université Polytechnique Hauts-de-France (UPHF)-Institut TELECOM/TELECOM Lille1, Institut Mines-Télécom [Paris] (IMT)-Institut Mines-Télécom [Paris] (IMT), and Université d'Artois (UA)-Centrale Lille-Institut de Chimie du CNRS (INC)-Université de Lille-Centre National de la Recherche Scientifique (CNRS)

Subjects
[CHIM.INOR]Chemical Sciences/Inorganic chemistry, ComputingMilieux_MISCELLANEOUS
Abstract

International audience

Published
2018

49. LaFeO3 thin films as relevant models for the surface investigation of 3‐way catalysts

Author

Nandi, Shreya, primary, Blanck, Dimitri, additional, Carlier, Thomas, additional, Chambrier, Marie‐Hélène, additional, Mamede, Anne‐Sophie, additional, Trentesaux, Martine, additional, Simon, Pardis, additional, Nuns, Nicolas, additional, Roussel, Pascal, additional, Ferri, Anthony, additional, Paul, Jean‐Francois, additional, and Berrier, Elise, additional

Published
2018
Full Text
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