Laboratoire de réactivité de surface

Publications du LRS

Publications HAL

Recherche Avancée

  • Article dans une revue

Development of acidic sites in WOx/ZrO2

Thomas Onfroy, Guillaume Clet, Marwan Houalla

Evidence is shown of the appearance of Brønsted acidic sites in WOx/ZrO2 at a given W loading and of a direct correlation between the abundance of ‘strong’ Brønsted acidic sites in these catalysts and propan-2-ol decomposition activity.

Chemical Communications, 2001, 15, pp.1378-1379. ⟨10.1039/b102867g⟩. ⟨hal-02399977⟩

  • Article dans une revue

Heteroaggregation and Selective Deposition for the Fine Design of Nanoarchitectured Bifunctional Catalysts: Application to Hydroisomerization

Olfa Ben Moussa, Lionel Tinat, Xiaojing Jin, Walid Baaziz, Olivier Durupthy, Celine Sayag, Juliette Blanchard

We successfully prepared bifunctional catalysts with the distance between metallic and acid sites tuned at the nanometer scale. Sols of β-zeolite nanoparticles were synthesized and mixed in optimized conditions with a γ-AlOOH boehmite suspension to yield alumina/zeolite aggregates with a nanometer…

ACS Catalysis, 2018, 8 (7), pp.6071-6078. ⟨10.1021/acscatal.8b01461⟩. ⟨hal-02160135⟩

  • Article dans une revue

Immobilisation of protein A on SAM's for the elaboration of immunosensors

Elisabeth Briand, Michèle Salmain, Chantal Compere, Claire-Marie Pradier

Binary mixtures of 11-mercaptoundecanoic acid (MUA) and other thiols of various lengths and terminal functions were chemisorbed on gold-coated surfaces via S-Au bonds to form mixed self-assembled monolayers (SAMs). Several values of the mole fraction of MUA in the thiol mixtures were tested and the…

Colloids and Surfaces, 2006, 53, pp.222-231. ⟨10.1016/j.colsurfb.2006.09.010⟩. ⟨hal-00111187⟩

  • Article dans une revue

Role of oxygen vacancies in the basicity of ZnO: From the model methylbutynol conversion to the ethanol transformation application

C. Drouilly, J.M. Krafft, F. Averseng, H. Lauron-Pernot, Delphine Bazer-Bachi, Céline Chizallet, V. Lecocq, Guylène Costentin

The parameters governing the basic reactivity of kadox and ex-carbonate zinc oxide samples towards alcohol conversion were investigated varying the atmosphere of pre-treatment for a model reaction, the methylbutynol (MBOH) conversion, and the ethanol conversion reaction, a transformation of…

Applied Catalysis A : General, 2012, 453, pp.121-129. ⟨10.1016/j.apcata.2012.11.045⟩. ⟨hal-00811509⟩

  • Article dans une revue

Selective hydrodechlorination of 1,2-dichloroethane on NiSiBEA zeolite catalyst: Influence of the preparation procedure on a high dispersion of Ni centers

R. Baran, I.I. Kamińska, A. Śrębowata, S. Dzwigaj

NixSiBEA zeolites (x = 1-2 Ni wt.%) were prepared by a two-steps postsynthesis method which consists of (1) creation of vacant T-sites by dealumination of tetraethylammonium BEA zeolite with nitric acid and then (2) impregnation of resulting SiBEA zeolite with an aqueous solution of Ni(NO3)2,…

Microporous and Mesoporous Materials, 2013, 169, pp.120-127. ⟨10.1016/j.micromeso.2012.11.005⟩. ⟨hal-00811551⟩

  • Article dans une revue

ZSM-5/SBA-15 microporous/mesoporous composites prepared by a microwave-assisted zeolitisation of Al-SBA-15 mesoporous solids

Sami Habib, Franck Launay, Henri El Zakhem, Matjaž Mazaj, Flavien Guenneau, Patricia Beaunier, Dalil Brouri, Nataša Novak Tušar, Venčeslav Kaučič, Antoine Gedeon

ZSM-5/SBA-15 composites with high textural properties were synthesised by a microwave-assisted zeolitisation of Al-SBA-15 in the presence of tetrapropylammonium bromide. The effect of the hydrothermal treatment temperature and of ammonium fluoride, often used as a catalyst, was studied. Resulting…

Materials Research Bulletin, 2013, 48, pp.1288-1295. ⟨10.1016/j.materresbull.2012.12.030⟩. ⟨hal-00912818⟩

  • Article dans une revue

UV irradiation study of a tripeptide isolated in an argon matrix: A tautomerism process evidenced by infrared and X-ray photoemission spectroscopies.

Eva Mateo-Marti, Claire-Marie Pradier

Matrix isolation is a powerful tool for studying photochemical processes occurring in isolated molecules. In this way, we characterized the chemical modifications occurring within a tri peptide molecule, IGF, when exposed to the influence of Ultraviolet (UV) irradiation. This paper first describes…

Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy [1994-..], 2013, 109, pp.247-252. ⟨10.1016/j.saa.2013.02.034⟩. ⟨hal-00915960⟩

  • Article dans une revue

Real time monitoring of the evolution of Ni2+ environment in faujasite upon rehydration by in situ dispersive-EXAFS.

Jean-François Groust, Catherine Pommier, Lorenzo Stievano, François Villain, Christine Giorgetti, François Baudelet, Pascale Massiani

The evolution of both oxygen and framework tetrahedral shells around Ni2+ cations in faujasite upon rehydration can be described in real time thanks to in situ dispersive-EXAFS. Such type of analysis permits precise experimental description of the coordination environment of cations in zeolite…

Catalysis Letters, 2005, 102, pp.257-260. ⟨10.1007/s10562-005-5865-3⟩. ⟨hal-00020239⟩

  • Article dans une revue

Influence of the nature of the noble metal on the lean C3H6-assisted decomposition of NO on Ce0.68Zr0.32O2-supported catalysts

Cyril Thomas, Olivier Gorce, Françoise Villain, Gérald Djéga-Mariadassou

The Selective Catalytic Reduction (SCR) of NO assisted by C3H6 is investigated on Ce0.68Zr0.32O2 (CZ)-supported Platinum Group Metals (PGMs: Pd, Rh, Pt) catalysts. This study shows that the order of reactivity of the PGMs supported on CZ is: Pd Pt ≥Rh. The performances of the most active CZ-…

Journal of Molecular Catalysis A: Chemical, 2006, 249, pp.71-79. ⟨10.1016/j.molcata.2006.01.001⟩. ⟨hal-00067988⟩

  • Article dans une revue

Evidence for Rh electron-deficient atoms (Rhdelta+) as the catalytic species for CO oxidation when supported on Ce0.68Zr0.32O2: a combined N2-FTIR, benzene hydrogenation and kinetic study

Céline Fontaine-Gautrelet, Jean-Marc Krafft, Gérald Djéga-Mariadassou, Cyril Thomas

The characterization of two low-loaded Rh(wt%)/Ce0.68Zr0.32O2 samples (Rh(0.29)/CZ and Rh(0.32)/CZ) was performed via N2-FTIR and benzene hydrogenation before being investigated for CO oxidation activity and kinetics. N2-FTIR allows characterization of both RhΔ+ (νN2 = 2295 cm-1) and Rh0 (νN2 =…

Journal of Catalysis, 2007, 247, pp.34-42. ⟨10.1016/j.jcat.2007.01.005⟩. ⟨hal-00157019⟩