• Communication dans un congrès

Magnetic properties of gamma-Fe2O3 nanoparticles patterned inside SBA-15 silicas : evidence of surface effects

Anne Davidson, Vincent Dupuis, Regine Perzynski

4th International Symposium on Bioscience and Nanotechnology, Nov 2006, Okinawa, Japan. ⟨hal-00172356⟩

• Article dans une revue

Observations of fast-moving features in the debris disk of AU Mic on a three-year timescale: Confirmation and new discoveries

A. Boccaletti, E. Sezestre, A.-M. Lagrange, P. Thebault, R. Gratton, M. Langlois, C. Thalmann, M. Janson, P. Delorme, J.-C. Augereau, G. Schneider, J. Milli, C. Grady, J. H Debes, Q. Kral, J. Olofsson, J. Carson, A. Maire, T. Henning, J. Wisniewski, J. Schlieder, C. Dominik, S. Desidera, C. Ginski, D. Hines, F. Menard, D. Mouillet, N. Pawellek, A. Vigan, Erwan M Lagadec, H. Avenhaus, J.-L. Beuzit, B. Biller, M. Bonavita, M. Bonnefoy, W. Brandner, F. Cantalloube, G. Chauvin, A. Cheetham, M. Cudel, C. Gry, S. Daemgen, M. Feldt, R. Galicher, J. Girard, J. Hagelberg, P. Janin-Potiron, M. Kasper, H. Le Coroller, D. Mesa, S. Peretti, C. Perrot, M. Samland, E. Sissa, F. Wildi, A. Zurlo, S. Rochat, E. Stadler, L. Gluck, A. Origné, M. Llored, P. Baudoz, G. Rousset, P. Martinez, F Rigal

Context. The nearby and young M star AU Mic is surrounded by a debris disk in which we previously identified a series of large-scale arch-like structures that have never been seen before in any other debris disk and that move outward at high velocities.Aims. We initiated a monitoring program with…

Astronomy & Astrophysics - A&A, 2018, 614, pp.A52. ⟨10.1051/0004-6361/201732462⟩. ⟨hal-02301370⟩

• Article dans une revue

Ni-Silica-based Catalysts for CH4 Reforming by CO2 with Enhanced Stability: Recent Designs and the Impacts of Ni Confinement, Promoters, and Core-Shell Structures

Oscar Daoura, Maya Boutros, Franck Launay

CO2 reforming of CH4, also referred to as the Dry Reforming of Methane (DRM), is considered an excellent method to produce H2 and CO (syngas), which are known to be used for the production of higher alkanes and oxygenates. Despite nickel’s moderate toxicity, Ni-based heterogeneous catalysts are…

Journal of Energy and Power Technology, 2021, 3 (1), ⟨10.21926/jept.2101007⟩. ⟨hal-04025299⟩

• Article dans une revue

Emergence of Order in Origin-of-Life Scenarios on Mineral Surfaces: Polyglycine Chains on Silica

Ola El Samrout, Marco Fabbiani, Gloria Berlier, Jean-François Lambert, Gianmario Martra

The polymerization of amino acids (AAs) to peptides on oxide surfaces has attracted interest owing to its high importance in biotechnology, prebiotic chemistry, and origin of life theories. However, its mechanism is still poorly understood. We tried to elucidate the reactivity of glycine (Gly) from…

Langmuir, 2022, 38 (50), pp.15516-15525. ⟨10.1021/acs.langmuir.2c02106⟩. ⟨hal-04025462⟩

• Article dans une revue

Interaction of ZnII porphyrin with TiO2 nanoparticles: from mechanism to synthesis of hybrid nanomaterials.

Jolanda Spadavecchia, Christophe Méthivier, Jessem Landoulsi, Claire-Marie Pradier

The mechanism of interaction of Zn porphyrin (ZnPP) with TiO2 surfaces is investigated with a view to optimizing the synthesis of hybrid nanomaterials. The strategy consists of studying the adsorption of ZnPP on TiO2 flat surfaces by taking advantage of complementary surface characterization…

ChemPhysChem, 2013, 14, pp.2462-2469. ⟨10.1002/cphc.201300193⟩. ⟨hal-00983739⟩

• Article dans une revue

Catalytic hydrogen-assisted dehydrochlorination of 1,2-dichloroethane over cobalt-containing beta zeolite

Anna Śrębowata, Rafal Baran, Izabela I. Kamińska, Thomas Onfroy, Jean-Marc Krafft, Stanislaw Dzwigaj

HAlBEA zeolite obtained by calcination of parent TEABEA zeolite at 823 K for 3 h in air following ion exchange with NH4NO3 solution and calcination at 773 K for 3 h was used for synthesis of cobalt containing zeolite by conventional wet impregnation with an aqueous solution of Co(NO3)2. The…

Catalysis Today, 2015, 251, pp.73-80. ⟨10.1016/j.cattod.2014.10.019⟩. ⟨hal-01226839⟩

• Article dans une revue

Discrimination of infrared fingerprints of bulk and surface POH and OH of hydroxyapatites

Sarah Diallo-Garcia, Manel Ben Osman, Jean-Marc Krafft, Souhir Boujday, Guylene Costentin

The identification of the nature of the surface acid base pairs present on hydroxyapatites surface is a key point to rationalize their catalytic properties. To investigate the possible involvement of acidic protonated phosphate (POH) and/or of basic OH emerging from the channels, the spectroscopic…

Catalysis Today, 2014, 226, pp.81-88. ⟨10.1016/j.cattod.2013.11.041⟩. ⟨hal-00982290⟩

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Cobalt Based Catalysts Supported on Two Kinds of Beta Zeolite for Application in Fischer-Tropsch Synthesis

Renata Sadek, Karolina Chalupka, Pawel Mierczynski, Jacek Rynkowski, Jacek Gurgul, Stanislaw Dzwigaj

Co-containing Beta zeolite catalysts prepared by a wet impregnation and two-step postsynthesis method were investigated. The activity of the catalysts was examined in Fischer-Tropsch synthesis (FTS), performed at 30 atm and 260 °C. The physicochemical properties of all systems were investigated by…

Catalysts, 2019, 9 (6), pp.497. ⟨10.3390/catal9060497⟩. ⟨hal-02271879⟩

• Article dans une revue

Transforming a Diamagnetic Ordered Mesoporous Silica Monolith into a Room Temperature Permanent Magnet through Multiscale Control of the Magnetic Properties

Virgile Trannoy, Laura Altenschmidt, Giulia Fornasieri, Amélie Bordage, Eric Rivière, Patricia Beaunier, Anne Bleuzen

ChemNanoMat, 2018, 4 (12), pp.1254-1261. ⟨10.1002/cnma.201800333⟩. ⟨hal-02353510⟩

• Article dans une revue

Bimetallic Au-Ag/TiO2 catalyst prepared by deposition-precipitation: High activity and stability in CO oxidation

A. Sandoval, A. Aguilar, C. Louis, Agnes Traverse, Rodolfo Zanella

Au-Ag bimetallic catalysts supported on TiO2 were prepared by sequential deposition-precipitation method, silver first and then gold. Au-Ag catalysts with different Au/Ag atomic ratios were synthesized. XANES and H2 TPR results show that gold is more easily reduced in bimetallic catalysts than in…

Journal of Catalysis, 2011, 281, pp.40-49. ⟨10.1016/j.cat.2011.04.003⟩. ⟨hal-00666778⟩