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  • LABORATOIRE CATALYSE & SPECTROCHIMIE

    The Catalysis and Spectrochemistry Laboratory (LCS) works on the preparation and study of solid catalysts for applications in environment and sustainable development. LCS is leader in the observation of catalytic materials inside a working reactor, in real time, during the chemical reaction (operando spectroscopy). With its very strong facility in infrared spectroscopy, and with some NMR, Raman and Uv-vis spectroscopies, LCS is in a unique position in car exhaust treatment, pollution abatement, in energy production (oil refining, bio-fuels) and in the domain of bio-sourcing of chemistry.

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  • Rational design of a CO2-resistant toluene hydrogenation catalyst based on FT-IR spectroscopy studies

    by Julien Scalbert, Cecile Daniel, Yves Schuurman, Cyril Thomas, Frederic C. Meunier in Journal of Catalysis Volume 318, October 2014, Pages 61–66 DOI: 10.1016/j.jcat.2014.07.013 Highlights • The deactivating sites over Rh/alumina in the presence of CO2 during toluene hydrogenation at 348 K were identified. • Using a less dispersed Rh supported on silica enabled obtaining […]

    23 August 2014 | Categories : News
  • In situ and post-synthesis control of physicochemical properties of FER-type crystals

    in Microporous and Mesoporous Materials by Xiaoxin Chen, Totka Todorova, Alexandre Vimont, Valérie Ruaux, Zhengxing Qin, Jean-Pierre Gilson, Valentin Valtchev DOI: 10.1016/j.micromeso.2014.07.057 Highlights • FER-type zeolites were synthesized in three different initial systems. • Seeds were used to decrease zeolite crystals size. • Secondary pores in zeolite crystals were formed by etching with HF-NH4F solutions. • Crystal morphology of obtained materials was studied. […]

    23 August 2014 | Categories : News
  • Metalloaded zeolite films with bi-modal porosity for selective detection of carbon monoxide

    by Louwanda Lakiss, Sébastien Thomas, Philippe Bazin, Vincent de Waele, Svetlana Mintova in Microporous and Mesoporous Materials DOI: 10.1016/j.micromeso.2014.08.001 Highlights • Preparation of metal containing (Pt, Pd) zeolite Beta nanocrystals. • Assembly of metal containing zeolite crystals in thin films. • Optical properties of metal containing zeolite films. • Detection of carbon monoxide, methanol and a mixture of both with zeolite […]

    12 August 2014 | Categories : News
  • Silver confined within zeolite EMT nanoparticles: preparation and antibacterial properties

    by Biao Dong, Sama Belkhair, Dr. Zaarour, Leanne Fisher, Joanna Verran, Lubomira Tosheva, Richard Retoux, Jean-Pierre Gilson and svetlana mintova Nanoscale, 2014, Accepted Manuscript DOI: 10.1039/C4NR03169E Abstract: The preparation of pure zeolite nanocrystals (EMT-type framework) and their silver ion-exchanged (Ag+-EMT) and reduced silver (Ag0-EMT) forms is reported. The template-free zeolite nanocrystals are stabilized in water suspensions […]

    30 July 2014 | Categories : News
  • Nanoparticles-induced inflammatory cytokines in human plasma concentration manner: an ignored factor at the nanobio-interface

    by Nicolin Tirtaatmadja, Gysell Mortimer, Eng-Poh Ng, Hacan Ali Ahmad, Svetlana Mintova, Vahid Serpooshan, Rodney F. Minchin, Morteza Mahmoudi Journal : Journal of the Iranian Chemical Society DOI : 10.1007/s13738-014-0486-7 Abstract : Properties of nanoparticles (NPs) are responsible for their interaction with various biomolecules such as proteins in biological environments. Amount and composition of the proteins associated with NPs, […]

    26 July 2014 | Categories : News
  • Silicate ionic liquid synthesis of zeolite merlinoite: Crystal size control from crystalline nanoaggregates to micron-sized single-crystals

    Mohamed Haouas, Louwanda Lakiss, Charlotte Martineau, Jaafar El Fallah, Valentin Valtchev, Francis Taulelle Microporous and Mesoporous Materials DOI: 10.1016/j.micromeso.2014.07.011 Highlights •Hydrated silicate ionic liquid is obtained by a two-steps procedure from TEOS. •Coacervation was observed in highly alkaline solution. •Phase separation by decantation allows extraction of silicate phase. •Synthesis of purely mineral merlinoite was achieved from […]

    22 July 2014 | Categories : News
  • RMN structurale dans le Bassin Parisien: Prochaine réunion Automne 2014 – mardi 30 septembre 2014 à Caen.

    Lieu: LCS – Caen, ENSICAEN, Salle de Conférence du CNRT Matériaux Les inscriptions sont ouvertes… Le programme de cette journée sera construit selon vos propositions avec une priorité aux jeunes en thèse ou en post-doc. La durée des communications sera limitée à 15 min + 5 min de discussion. Programme, Renseignements et Inscriptions…  

    15 July 2014 | Categories : News
  • Liquid phase cyclohexene oxidation over vanadia based catalysts with tert-butyl hydroperoxide: Epoxidation versus allylic oxidation

    by Sanaa El-Korso, Ilyes Khaldi, Sumeya Bedrane, Abderrahim Choukchou-Braham,Frédéric Thibault-Starzyk, Redouane Bachir DOI: 10.1016/j.molcata.2014.07.002 Journal of Molecular Catalysis A: Chemical Highlights •We have epoxidation in the presence of redox and monomeric vanadium sites. •Allylic oxidation was obtained with acidic and/or polymeric vanadium sites. •This reaction is heterogeneous and vanadium leaching is not observed. •The results indicate […]

    15 July 2014 | Categories : News
  • Today lab picnic!

    11 July 2014 | Categories : News
  • Vapor Responsive One-Dimensional Photonic Crystals from Zeolite Nanoparticles and Metal Oxide Films for Optical Sensing

    by Katerina Lazarova, Hussein Awala, Sebastien Thomas, Marina Vasileva, Svetlana Mintova and Tsvetanka Babeva Sensors 2014, 14(7), 12207-12218; doi:10.3390/s140712207, http://www.mdpi.com/1424-8220/14/7/12207 Abstract: The preparation of responsive multilayered structures with quarter-wave design based on layer-by-layer deposition of sol-gel derived Nb2O5 films and spin-coated MEL type zeolite is demonstrated. The refractive indices (n) and thicknesses (d) of the layers are determined […]

    10 July 2014 | Categories : Research activities