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  • 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

Platinum Doped Hydrotreating Catalysts for Deep Hydrodesulfurization of Diesel Fuels

Stéphanie Pessayre, Christophe Geantet, Robert Bacaud, Michel Vrinat, Thanh Son N'Guyen, Yvonne Soldo, Jean-Louis Hazemann, Michèle Breysse

Two-stage processes are possible solutions for reaching 10 ppm sulfur in gas oil without severe running conditions. First, most of the sulfur is removed by using a CoMo conventional catalyst. Second, after H2S removal, the treated oil, with a remaining S content below 500 ppm, is again hydrotreated…

Industrial and engineering chemistry research, 2007, 46 (12), pp. 3877-3883. ⟨10.1021/ie060932x⟩. ⟨hal-00333732⟩

  • 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⟩

  • Article dans une revue

Antibacterial surfaces developed from bio-inspired approaches

K. Glinel, P. Thébault, Vincent Humblot, Claire-Marie Pradier, T. Jouenne

Prevention of bacterial adhesion and biofilm formation on the surfaces of materials is a topic of major medical and societal importance. Various synthetic approaches based on immobilization or release of bactericidal substances such as metal derivatives, polyammonium salts and antibiotics were…

Acta Biomaterialia, 2012, 8, pp.1670-1684. ⟨10.1016/j.actbio.2012.01.011⟩. ⟨hal-00689996⟩

  • Article dans une revue

Extension of a kinetic model for NO oxidation and NOx storage to fixed-bed Pt/Ba/Al2O3 catalysts

Nikola Rankovic, Andre Nicolle, David Berthout, Patrick da Costa

Following our work on modeling of monolith catalysts, we herein focus on developing a fixed-bed reactor model in the AMESim modeling platform. A kinetic model for NO oxidn. and NOx storage over Pt/Ba/Al2O3 recently developed in the literature was successfully implemented and validated against the…

Catalysis Communications, 2010, 12 (1), pp.54-57. ⟨10.1016/j.catcom.2010.07.012⟩. ⟨hal-00604793⟩

  • Article dans une revue

Light olefin transformation over ZSM-5 zeolites with different acid strengths - A kinetic model

P. Oliveira, P. Borges, R. Ramos Pinto, M. A. N. D. A. Lemos, F. Lemos, Jacques C. Vedrine, F. Ramoa Ribeiro

The authors analyzed the influence of the acidity of a ZSM-5 catalyst on the catalytic transformation of various short-chain olefins (ethylene, propylene and 1-butene). Four ZMS-5 catalysts with different acid strength distributions were studied at different temps. and partial pressures. The…

Applied Catalysis A : General, 2010, 384 (1-2), pp.177-185. ⟨10.1016/j.apcata.2010.06.032⟩. ⟨hal-00604786⟩

  • Article dans une revue

NMR cogwheel phase cycling determination with web tools: Amplitude-modulated z-filter MQMAS sequence

Yannick Millot, Redouane Hajjar, Pascal P. Man

Our recent method based on the use of web tools (XML and XSLT) for constructing cogwheel phase cycles is extended to the selection of two sym. coherence transfer pathways in the case of an amplitude-modulated z-filter MQMAS sequence. For all spins (I=3/2, 5/2, 7/2 and 9/2) and all MQ expts. we…

Solid State Nuclear Magnetic Resonance, 2010, 38 (1), pp.19-26. ⟨10.1016/j.ssnmr.2010.06.001⟩. ⟨hal-00604781⟩

  • Article dans une revue

A TEM and UV-visible study of silver reduction by ethanol in Ag-alumina catalysts

Elie Sayah, Dalil Brouri, Yiaho Wu, Andrea Musa, Patrick da Costa, Pascale Massiani

A transmission electron microscopy (TEM) study dedicated to the understanding of dispersion and location of Ag nanospecies in silver-alumina catalysts is reported. A special attention is put on the conditions of powder catalyst deposition on the grids for TEM analysis. When the deposition is…

Applied Catalysis A : General, 2011, 406, pp.94-101. ⟨10.1016/j.apcata.2011.08.016⟩. ⟨hal-00668908⟩

  • Article dans une revue

Influence of the nitric acid treatment on Al removal, framework composition and acidity of BEA zeolite investigated by XRD, FTIR and NMR

Rafal Baran, Yannick Millot, Thomas Onfroy, Jean-Marc Krafft, Stanislaw Dzwigaj

Two different procedures were used to prepare dealuminated BEA zeolite. The first procedure realized in two steps consisted of first calcination of original tetraethylammonium (TEA) BEA(17) zeolite in air at 823 K for 15 h to remove organic template and then treatment of as resulted organic-free…

Microporous and Mesoporous Materials, 2012, 163, pp.122-130. ⟨10.1016/j.micromeso.2012.06.055⟩. ⟨hal-00744716⟩

  • Article dans une revue

Role of the Al source in the synthesis of aluminum magadiite

Yunfei Bi, Juliette Blanchard, Jean-François Lambert, Yannick Millot, Sandra Casale, Shuangqin Zeng, Hong Nie, Dadong Li

The role of the aluminum source on the insertion of Al in the silicate layers during the hydrothermal crystallization of magadiite (NaSi7O13(OH),4H2O), a lamellar silicate, was investigated. Three aluminum sources were compared: aluminum isopropoxide, aluminum sulfate and aluminum hydroxide We…

Applied Clay Science, 2012, 57, pp.71-78. ⟨10.1016/j.clay.2012.01.005⟩. ⟨hal-00690843⟩