Laboratoire de réactivité de surface

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  • Article dans une revue

Surface‐Dependent Activation of Model α‐Al2O3‐Supported P‐Doped Hydrotreating Catalysts Prepared by Spin Coating

Ricardo Garcia de Castro, Jérémy Bertrand, Baptiste Rigaud, Elodie Devers, Mathieu Digne, Anne‐félicie Lamic-Humblot, Gerhard Pirngruber, Xavier Carrier

Requirements for improved catalytic formulations is continuously driving research in hydrotreating (HDT) catalysis for biomass upgrading and heteroatom removal for cleaner fuels. The present work proposes a surface-science approach for the understanding of the genesis of the active (sulfide) phase…

Chemistry - A European Journal, 2020, 26 (64), pp.14623-14638. ⟨10.1002/chem.202001882⟩. ⟨hal-04025167⟩

  • Article dans une revue

C3-Alkylation of furfural derivatives by continuous flow homogeneous catalysis

Grédy Kiala Kinkutu, Catherine Louis, Myriam Roy, Juliette Blanchard, Julie Oble

The C3-functionalization of furfural using homogeneous ruthenium catalysts requires the preinstallation of an ortho -directing imine group, as well as high temperatures, which did not allow scaling up, at least under batch conditions. In order to design a safer process, we set out to develop a…

Beilstein Journal of Organic Chemistry, 2023, 19, pp.582-592. ⟨10.3762/bjoc.19.43⟩. ⟨hal-04217003⟩

  • Article dans une revue

Design of simple salophen chromium complexes for a two-steps oxidative carboxylation of styrene with CO2 and O2

Matthieu Balas, Richard Villanneau, Franck Launay

In this work, chromium(III) Salophen complexes bearing tertiary dimethyl or diethyl amino substituents were synthesized and tested as homogeneous co-catalysts associated with n-Bu 4 NBr for the cycloaddition of CO 2 on styrene epoxide under 11 bar of CO 2. Full conversion of styrene oxide into…

Journal of CO2 Utilization, 2023, 72, pp.102497. ⟨10.1016/j.jcou.2023.102497⟩. ⟨hal-04200038⟩

  • Article dans une revue

Characterization of mesoporous alumina prepared by surface alumination of SBA-15

Manuel Baca, Emmanuel de La Rochefoucauld, Emmanuelle Ambroise, Jean-Marc Krafft, Redouane Hajjar, Pascal P. Man, Xavier Carrier, Juliette Blanchard

Mesoporous aluminas of controlled pore sizes were synthesized by multiple grafting of Al isopropoxide in organic solvents on mesoporous silica SBA-15. These materials were characterized by N2 physisorption, TEM, XRD, 27Al NMR and their surface chemical properties were probed by DRIFT, cumene…

Microporous and Mesoporous Materials, 2008, 110, pp.232-241. ⟨hal-00260914⟩

  • Article dans une revue

Interactions of Calcium with Chlorogenic and Rosmarinic Acids: An Experimental and Theoretical Approach

Estelle Palierse, Cédric Przybylski, Dalil Brouri, Claude Jolivalt, Thibaud Coradin

Chlorogenic (CA) and rosmarinic (RA) acids are two natural bioactive hydroxycinnamic acids whose antioxidant properties can be modulated by the chelation of metal ions. In this work, the interactions of these two carboxylic phenols with calcium ions and the impact of such interactions on their…

International Journal of Molecular Sciences, 2020, 21 (14), pp.4948. ⟨10.3390/ijms21144948⟩. ⟨hal-02924443⟩

  • Article dans une revue

Identification and Location of Iron Species in Fe/SBA-15 Catalysts: Interest for Catalytic Fenton Reactions

Cécile Cornu, Jean-Luc Bonardet, Sandra Casale, Anne Davidson, Sebastien Abramson, Gilles André, Florence Porchet, Ivana Grcic, Vesna Tomasic, Dinko Vujevic

We have used a single SBA-15 silica batch (mesopore diameter of 7.1 nm) and the two-solvent impregnation technique with either pentane or cyclohexane to prepare model samples in which an initial aqueous solution of salt precursor (iron nitrate or iron chloride) is deposited mainly inside silica…

Journal of Physical Chemistry C, 2011, 116, pp.3437-3448. ⟨10.1021/jp2038625⟩. ⟨hal-00688081⟩

  • Article dans une revue

On-line inductively coupled plasma-atomic emission spectroelectrochemistry: Real-time element-resolved electrochemistry

Borhan Bin Mohamad Sultan, Oumaïma Gharbi, Kevin Ogle, Junsoo Han

Electrochemical techniques are coupled with inductively coupled plasma (ICP) atomic emission spectrometry for in-line electrolyte analyses. In this way, direct measurement of the elemental dissolution rates in real-time or element-resolved electrochemistry can be carried out, complementary to…

Current Opinion in Electrochemistry, 2023, 41, pp.101350. ⟨10.1016/j.coelec.2023.101350⟩. ⟨hal-04211090⟩

  • Article dans une revue

In-situ monitoring of transition metal complex adsorption on oxide surfaces during the first stages of supported metal catalyst preparation

Juliette Blanchard, Antoine Hervier, Guylène Costentin, John Regalbuto, Catherine Louis, Souhir Boujday

In the preparation of supported catalysts by deposition, in solution, of a transition metal complex (TMC) on an oxide support, the interactions occurring at the solid/liquid interface between the TMC and the oxide have a crucial impact on the properties of the final catalyst. However, these…

Catalysis Today, 2014, 235, pp.245-249. ⟨10.1016/j.cattod.2014.03.031⟩. ⟨hal-01077975⟩

  • Article dans une revue

Theoretical and experimental study of the adsorption of neutral glycine on silica from the gas phase

Claire Lomenech, Gregoire Bery, Dominique Costa, Lorenzo Stievano, Jean-François Lambert

The adsorption of neutral glycine onto amorphous silica was investigated both theoretically and experimentally. DFT calculations were performed at the BLYP-631++G** level using a cluster approach. Several possible configurations involving the formation of H-bonds between glycine and one, two or…

ChemPhysChem, 2005, 6, pp.1061-1070. ⟨hal-00128574⟩

  • Thèse

Comprehension of cellulose depolymerisation mechanisms induced by iron ions, Compréhension des mécanismes de dépolymérisation de la cellulose induits par les ions fer

Alice Gimat

Degradation of paper by iron gall inks (IGI) is a challenging issue for written heritage conservation. These inks consist of a mixture of iron(II) sulphate, tannins and gum Arabic, and are therefore acidic and iron-rich. Hence, paper degradation by IGI is often attributed to a combination of acid…, La dégradation du papier par les encres ferrogalliques (EFG) est un défi pour la conservation du patrimoine écrit. Ces encres, composées d'un mélange de sulfate de fer (II), de tannins et de gomme Arabique, sont acides et riches en fer. Par conséquent, les mécanismes de dégradation des…

Material chemistry. Université Pierre et Marie Curie - Paris VI, 2016. English. ⟨NNT : 2016PA066579⟩. ⟨tel-01654429⟩