Laboratoire de réactivité de surface

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  • Article dans une revue

Dealuminated Beta Zeolite Modified by Alkaline Earth Metals

Karolina Chalupka, Renata Sadek, Laetitia Valentin, Yannick Millot, Christophe Calers, Magdalena Nowosielska, Jacek Rynkowski, Stanislaw Dzwigaj

Alkaline Earth metals (Mg, Sr, and Ca) were incorporated into the dealuminated mesoporous beta zeolite (DeAlBeta) by the two-step postsynthesis method. Physicochemical properties of both unmodified and alkaline Earth metal-modified DeAlBeta zeolite were characterized by XRD, DR UV-vis, FTIR, TPD of…

Journal of Chemistry , 2018, 2018, pp.1-11. ⟨10.1155/2018/7071524⟩. ⟨hal-03984227⟩

  • Article dans une revue

Insights into the WOx Coverage-Dependent Location and Oxidation State of Noble Metals Supported on Tungstated Oxides: The Case of Rh/WOx−Ce0.62Zr0.38O2

Thomas Bonnotte, Rachel P. Doherty, Céline Sayag, Jean-Marc Krafft, Christophe Méthivier, Mickaël Sicard, Frédéric Ser, Cyril Thomas

Noble metals-promoted tungstated oxides have been shown to be profitable in a wide variety of catalytic reactions of environmental interest but to be detrimental in the hydrogenation of aromatics. The origin of the deleterious effect of tungstates on the hydrogenation performance of noble metals is…

Journal of Physical Chemistry C, 2014, 118, pp.7386−7397. ⟨10.1021/jp410848f⟩. ⟨hal-00979525⟩

  • Article dans une revue

Remarkable activity of Ag/Al2O3/cordierite catalysts in SCR of NO with ethanol and butanol

Pavlo Kyriienko, Nataliia Popovych, Sergiy Soloviev, Svitlana Orlyk, Stanislaw Dzwigaj

Structured silver-alumina catalysts were prepared by the one-step deposition of Al2O3 directly on the surface of cordierite block matrices with subsequent incipient wetness impregnation of Al2O3/cordierite with an AgNO3 aqueous solution. The catalysts were characterized by BET, XRD, XPS and FTIR…

Applied Catalysis B: Environmental, 2013, 140-141, pp.691-699. ⟨10.1016/j.apcatb.2013.04.067⟩. ⟨hal-00911716⟩

  • Thèse

Préparation de nanoparticules de rhodium(0) sur support mésoporeux assistée par des sels d'ammonium quaternaires : Application à la catalyse d'hydrogénation asymétrique d'arènes prochiraux, Preparation of rhodium (0) nanoparticles on mesoporus support assisted by quaternary ammonium salts : application to asymmetric hydrogenation of prochiral arenes

Rita Sassine

Ces travaux de thèse visent à développer de nouveaux catalyseurs associant les activités prometteuses des nanoparticules de Rh(0) et l'effet de confinement des supports mésoporeux pour des applications en hydrogénation asymétrique dans l'eau. Des particules ont été préparées par réaction…, This thesis aims to develop new catalysts combining Rh(0) nanoparticles with promising activities and the confinement effect of mesoporous materials for applications in asymmetric hydrogenation in water. Particles were prepared by the reaction of NaBH4 with RhCl3, directly, within silicic (SBA-15)…

Génie des procédés. Université Pierre et Marie Curie - Paris VI, 2012. Français. ⟨NNT : 2012PA066053⟩. ⟨tel-00834363⟩

  • Article dans une revue

Revealing the Interplay between Adsorbed Molecular Layers and Gold Nanoparticles by Linear and Nonlinear Optical Properties

Laetitia Dalstein, Maroua Ben Haddada, Grégory Barbillon, Christophe Humbert, Abderrahmane Tadjeddine, Souhir Boujday, Bertrand Busson

Gold nanoparticles (AuNPs) chemically grafted on substrates are widely used as sensors due to their plasmonic properties. The efficiency and robustness of such sensors strongly depend on the molecular sublayer structure, which influences the distribution of AuNPs, and therefore the plasmonic…

Journal of Physical Chemistry C, 2015, 119 (30), pp.17146-17155. ⟨10.1021/acs.jpcc.5b03601⟩. ⟨hal-02111041⟩

  • Article dans une revue

Fluorescent silica MCM-41 nanoparticles based on flavonoids: Direct post-doping encapsulation and spectral characterization

Anton Landström, Silvia Leccese, Hagop Abadian, Jean-François Lambert, Isabella Concina, Stefano Protti, Ari Paavo Seitsonen, Alberto Mezzetti

Flavones and flavonols are naturally-occurring organic molecules with interesting biological, chemical and photophysical properties. In recent years their interaction with silica surfaces has received increasing attention. In this work, the flavonol 3-hydroxyflavone (3HF) and the flavone 7-…

Dyes and Pigments, 2021, 185, pp.108870 -. ⟨10.1016/j.dyepig.2020.108870⟩. ⟨hal-03493406⟩

  • Article dans une revue

Heterogeneous catalytic partial oxidation of lower alkanes (C 1 –C 6 ) on mixed metal oxides

Jacques Védrine

This review paper aims at analysing the state of the art for partial oxidation and oxidative dehydrogenation (ODH) reactions of lower alkanes C1–C6 into olefins and oxygenated products (aldehydes, anhydrides, carboxylic acids) on metal oxide catalysts with cations of variable oxidation state, such…

Journal of Energy Chemistry, 2016, 25 (6), pp.936-946. ⟨10.1016/j.jechem.2016.10.007⟩. ⟨hal-02188605⟩

  • Thèse

Defects in ZnO nanoparticles obtained by gas-phase syntheses, Défauts dans les nanoparticules de ZnO obtenues par synthèses en phase gazeuse

Miao Zhang

By far, the assignment of defects-related spectroscopic features of zinc oxide is still a matter of great controversy. This is probably due to the variety of possible defects in ZnO as well as to their still uncertain formation energies and positions within the band gap. Uncontrolled measurement…, L’attribution des signatures spectrales liées aux défauts dans l’oxyde de zinc fait encore l’objet de controverses. Ceci est probablement dû à la grande variété de défauts possibles, à l’incertitude de leur niveau d’énergie ainsi que leur énergie de formation dans la bande interdite. De plus, l’…

Chemical Sciences. Sorbone Université; ED, 2017. English. ⟨NNT : ⟩. ⟨tel-03952778⟩

  • Article dans une revue

Oscillatory Behavior of Pd-Au Catalysts in Toluene Total Oxidation

Tarek Barakat, Joanna Rooke, Dayan Chlala, Renaud Cousin, Jean-François Lamonier, Jean-Marc Giraudon, Sandra Casale, Pascale Massiani, Bao-Lian Su, Stéphane Siffert

In this work, the activity of bimetallic Pd-Au doped hierarchically structured titania catalysts has been investigated in the total oxidation of toluene. In earlier works, doping titania with group Vb metal oxides ensured an increased catalytic performance in the elimination of VOC molecules. A…

Catalysts, 2018, 8 (12), pp.574. ⟨10.3390/catal8120574⟩. ⟨hal-02311603⟩

  • Thèse

Use of unconventional activation methods for the oxidative cleavage of lignin by dioxygen, Utilisation de moyens d’activation non-conventionnels pour le clivage oxydant de la lignine par le dioxygène

Louay Al-Hussaini

Due to the depletion of fossil resources, the interest of lignin as a sustainable alternative to petroleum is growing. Thus, the main purpose of this thesis was to develop a process for oxidative cleavage of lignin by dioxygen that involves unconventional methodologies like sonochemistry and ball-…, Du fait de l'épuisement des ressources fossiles, l'intérêt de la lignine en tant qu'alternative durable est grandissant. Ainsi, le but principal de cette thèse était de mettre au point un procédé de clivage oxydant de la lignine par le dioxygène qui implique des voies non…

Other. Sorbonne Université, 2019. English. ⟨NNT : 2019SORUS448⟩. ⟨tel-03463302⟩