• Article dans une revue

1H MAS NMR study of the coordination of hydroxyl groups generated upon adsorption of H2O and CD3OH on clean MgO surfaces

Céline Chizallet, Guylène Costentin, Hélène Lauron-Pernot, Jocelyne Maquet, Michel Che

The coordination of OH groups on MgO has been characterized by 1H MAS NMR after appropriate pre-treatment conditions to obtain surfaces free from carbonates and with a controlled degree of hydroxylation. On MgO-sol–gel sample treated at 1023 K under flowing nitrogen, hydroxylated with water and…

Applied Catalysis A : General, 2006, 307, pp.239-244. ⟨10.1016/j.apcata.2006.03.056⟩. ⟨hal-00112138⟩

• Article dans une revue

Kinetic study of the deep hydrodesulfurization of dibenzothiophene over molybdenum carbide supported on a carbon black composite: Existence of two types of active sites

A. Hynaux, Celine Sayag, S. Suppan, J. Trawczynski, M. H. Lewandowski, A. Szymanska-Kolasa, G. Djéga-Mariadassou

Hydrodesulfurization (HDS) is part of the hydrotreating process, which is an ensemble of several reactions (HDN, HDO, HDS, etc.) taking place simultaneously at the industrial scale. Only sulfur is currently submitted to drastic Europeans specifications and conventional commercial catalysts cannot…

Catalysis Today, 2006, 119, pp.3-6. ⟨10.1016/j.cattod.2006.08.053⟩. ⟨hal-00128095⟩

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Carbon black composites—supports of HDS catalysts

P. Gheek, S. Suppan, J. Trawczynski, A. Hynaux, Celine Sayag, G. Djéga-Mariadassou

HDS activity of sulfided Mo (W) catalysts supported on carbon black composites (CBC) is affected by kind of functional groups present on the CBC surface. Oxidation of CBC with (NH4)2S2O8 produce functionalities with the highest acid strength and corresponding catalyst exhibits the highest HDS…

Catalysis Today, 2006, 119, pp.19-22. ⟨10.1016/j.cattod.2006.08.026⟩. ⟨hal-00128078⟩

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A DNA biosensor based on peptide nucleic acids on gold surfaces

Eva Mateo-Marti, C. Briones, Claire-Marie Pradier, Jose A. Martin-Gago

We present a DNA biosensor based on self assembled monolayers (SAMs) of thiol-derivatized Peptide nucleic acid (PNA) chains adsorbed on gold surfaces for recognizing complementary ssDNA. PNA molecules tend to realign their molecular axes parallel to the surface normal and form SAMs on gold surfaces…

Biosensors and Bioelectronics, 2006, 22, pp.1926-1932. ⟨10.1016/j.bios.2006.08.012⟩. ⟨hal-00138700⟩

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Sorption of Cu(II) onto vineyard soils: macroscopic and spectroscopic investigations

Eric Marceau, Lorenzo Stievano

The sorption of Cu on five vineyard soils was examined via macroscopic and spectroscopic investigations. The composition of the soils was previously determined using X-ray diffraction (XRD) and X-ray photoelectron spectroscopy (XPS). X-ray absorption spectroscopy (XAS) was employed to determine the…

Journal of Colloid and Interface Science, 2007, 307, pp.40-49. ⟨10.1016/j.jcis.2006.10.080⟩. ⟨hal-00133593⟩

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Adsorption of L-Lysine on Cu(110): A RAIRS study from UHV to the liquid phase

Vincent Humblot, Christophe Méthivier, Claire-Marie Pradier

Adsorption of L-Lysine on a Cu(110) surface has been investigated under UHV condition from sublimation of a crystalline phase. The adsorption was characterised by Fourier Transform Reflection Absorption Infrared Spectroscopy (FT-RAIRS) during exposure and Auger Electron Spectroscopy (AES). At room…

Langmuir, 2006, 22, pp.3089-3096. ⟨10.1021/La0533866⟩. ⟨hal-00022056⟩

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Hydrodesulfurization of dibenzothiophene on MoS2/MCM-41 and MoS2/SBA 15 catalysts prepared by thermal spreading of MoO3.

A. Sampieri-Croda, Stéphane Pronier, Joël Blanchard, Michèle Breysse, Sylvette Brunet, Katia Fajerwerg, C. Louis, Guy Perot

Catalysis Today, 2005, 107-108, pp.537-544. ⟨10.1016/j.cattod.2005.07.069⟩. ⟨hal-00288833⟩

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Palladium loaded BEA zeolites as efficient catalysts for aqueous-phase diclofenac hydrodechlorination

Bartosz Zawadzki, Emil Kowalewski, Monika Asztemborska, Krzysztof Matus, Sandra Casale, Stanislaw Dzwigaj, Anna Śrębowata

Herein the catalytic performance of two 1 wt% Pd loaded BEA zeolites with Si/Al ratio of 19 and 1300 were investigated for the aqueous phase hydrodechlorination (HDC) of diclofenac, the latter compound a prevalent nonsteroidal anti-inflammatory drug. 1 wt%Pd/SiO2 and 1 wt%Pd/Al2O3 being commonly…

Catalysis Communications, 2020, 145, pp.106113. ⟨10.1016/j.catcom.2020.106113⟩. ⟨hal-03014314⟩

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CO2-assisted Dehydrogenation of Propane to Propene over Zn-BEA Zeolites: Impact of Acid-Base Characteristics on Catalytic Performance

Svitlana Orlyk, Pavlo Kyriienko, Andriy Kapran, Valeriy Chedryk, Dmytro Balakin, Jacek Gurgul, Yannick Millot, Stanislaw Dzwigaj

The research results about the influence of BEA zeolite preliminary dealumination on the acid-base characteristics and catalytic performance of 1%Zn-BEA compositions in propane dehydrogenation with CO2 are presented. The catalyst samples, prepared by a two-step post-synthesis procedure, involving…

Catalysts, 2023, 13 (4), pp.681. ⟨10.3390/catal13040681⟩. ⟨hal-04201435⟩

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Bimetallic Ni-Zn/TiO2 catalysts for selective hydrogenation of alkyne and alkadiene impurities from alkenes stream

Zhao Wang, Guillaume Wang, Catherine Louis, Laurent Delannoy

This study investigates the alternative of replacing noble metals by base metals as catalysts for selective hydrogenation of polyunsaturated hydrocarbons. Nickel catalysts are active for this type of reaction, but poorly selective. However, former calculations anticipated that Ni-Zn alloys could…

Research on Chemical Intermediates, 2021, 47 (1), pp.91-116. ⟨10.1007/s11164-020-04327-0⟩. ⟨hal-03146611⟩