• Article dans une revue

Influence of the preparation procedure on the nature and environment of vanadium in VSiBEA zeolite: XRD, DR UV-vis, NMR, EPR and TPR studies

Rafal Baran, Yannick Millot, Thomas Onfroy, Frédéric Averseng, Jean-Marc Krafft, Stanislaw Dzwigaj

Two series of VxSiBEA(I) and VxSiBEA(II) zeolites have been prepared by a two-steps postsynthesis method which consists, in the first step, in the dealumination of TEABEA zeolite by two different procedures to obtain SiBEA(I) and SiBEA(II) zeolites and then, in the second step, in contacting the…

Microporous and Mesoporous Materials, 2012, 161, pp.179-186. ⟨10.1016/j.micromeso.2012.05.023⟩. ⟨hal-00744705⟩

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Silver species reduction upon exposure of Ag/Al2O3 catalyst to gaseous ethanol: An in situ Quick-XANES study

Elie Sayah, Camille La Fontaine, Valérie Briois, Dalil Brouri, Pascale Massiani

The evolution of supported silver species of a pre-calcined Ag/Al2O3 catalyst was monitored upon thermal treatment under an air flow enriched with 3000 ppm of ethanol (EtOH) using transmission electron microscopy and UV-visible and X-ray absorption spectroscopies. A special focus is put on the…

Catalysis Today, 2012, 189, pp.55-59. ⟨10.1016/j.cattod.2012.03.055⟩. ⟨hal-00745963⟩

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Influence of the swelling agents of siliceous mesocellular foams on the performances of Ni-based methane dry reforming catalysts

Oscar Daoura, Sarah Daher, Marie-Nour Kaydouh, Nissrine El Hassan, Pascale Massiani, Franck Launay, Maya Boutros

International Journal of Hydrogen Energy, 2018, 43 (36), pp.17205-17215. ⟨10.1016/j.ijhydene.2018.07.123⟩. ⟨hal-02414800⟩

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Magnetic Fe 2 O 3 −Polystyrene/PPy Core/Shell Particles: Bioreactivity and Self-Assembly

Claire Mangeney, Meriem Fertani, Smain Bousalem, Ma Zhicai, Souad Ammar, Frédéric Herbst, Patricia Beaunier, Abdelhamid Elaissari, Mohamed Chehimi

This paper describes the synthesis of new magnetic, reactive polystyrene/polypyrrole core/shell latex particles. The core consists of a polystyrene microsphere containing gamma-Fe2O3 superparamagnetic nanoparticles (PSmag), and the shell is made of reactive N-carboxylic acid-functionalized…

Langmuir, 2007, 23 (22), pp.10940-10949. ⟨10.1021/la700492s⟩. ⟨hal-02093459⟩

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Characterization and catalytic activity of Mn (salen) immobilized on silica by various strategies

Khalil Tesnime Abou, Chaaben Semy Ben, Boujday Souhir, Bergaoui Latifa

Different strategies were applied to prepare supported Mn(salen) on fumed silica and to explore the effect of the interaction nature between the active sites and the surface on the catalytic activity. Direct and multistep grafting methods were used: the silica surface was silylated and the metal…

IOSR Journal of Applied Chemistry, 2015, 8, pp.36-45. ⟨10.9790/5736-08113645⟩. ⟨hal-01133157⟩

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Adsorption of dyes from aqueous solution under batch mode using cellulosic orange peel waste

Sami Guiza, Launay Franck, Mohamed Bagané

The present work aimed at studying the use of orange peel (OP) biosorption for the removal of methylene blue (MB) and Congo red (CR) from aqueous solution. The influences of initial dye concentration and contact time on the biosorption process were studied. Experimental data were modeled by…

Desalination and Water Treatment, 2018, 113, pp.262-269. ⟨10.5004/dwt.2018.22258⟩. ⟨hal-04015930⟩

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Chemical Preparation of Supported Bimetallic Catalysts. Gold-Based Bimetallic, a Case Study

Catherine Louis

This review focuses on the chemical methods used to prepare supported bimetallic heterogeneous catalysts, i.e., bimetallic nanoparticles deposited on a support. The review is limited to the preparation of gold-based bimetallic catalysts and moreover to bimetallic nanoparticles supported on powder…

Catalysts, 2016, 6 (8), pp.110. ⟨10.3390/catal6080110⟩. ⟨hal-01375388⟩

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Influence of organic additives on the properties of impregnationsolutions and on nickel oxide particle size for Ni/Al2O3catalysts

Faiza Bentaleb, Michel Che, Anne-Claire Dubreuil, Cécile Thomazeau, Eric Marceau

tThe introduction of organic additives, such as polyols, sugars or polyacids, in impregnation solutionshas been suggested to better control the size of nanoparticles on supported catalysts. The present paperfocuses on the roles played by three of these additives, sorbitol, glucose and citric acid,…

Catalysis Today, 2014, 235, pp.250-255. ⟨10.1016/j.cattod.2014.02.020⟩. ⟨hal-01065046⟩

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Degree Complexity of a Family of Birational Maps

Eric Bedford, Kyounghee Kim, Tuyen Trung Truong, Nina Abarenkova, Jean-Marie Maillard

Mathematical Physics, Analysis and Geometry, 2008, 11 (1), pp.53-71. ⟨10.1007/s11040-008-9039-6⟩. ⟨hal-02340518⟩

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Control of calcium accessibility over hydroxyapatite by post-precipitation steps: influence on the catalytic reactivity toward alcohols

Manel Ben Osman, Sarah Diallo Garcia, Jean-Marc Krafft, Christophe Methivier, Juliette Blanchard, Tetsuya Yoshioka, Jun Kubo, Guylène Costentin

Hydroxyapatites are increasingly used as heterogeneous catalysts since they present atypical behaviours for many acid base reactions. The aim of this study was to discuss the possible involvement of Ca2+ Lewis and/or PO–H Brønsted acid sites belonging to the hydroxyapatite system in the conversion…

Physical Chemistry Chemical Physics, 2016, ⟨10.1039/C6CP05294K⟩. ⟨hal-01378475⟩