Laboratoire de réactivité de surface

Publications du LRS

Publications HAL

Recherche Avancée

  • Article dans une revue

Mesostructured or Alumina-mesostructured Silica SBA-16 as Potential Support for NOx Reduction and Ethanol Oxidation

Maya Boutros, Thomas Onfroy, Patrick da Costa

Synthesis of some meso-structured SiO2 or aluminosilica (SBA-16 and Al-SBA-16) with a 3-dimensional cubic structure is reported. Structural and porosity properties of these materials were studied by x-ray diffraction, N2 sorption, and transmission electron microscopy imaging.; Al insertion was detd…

Catalysis Letters, 2010, 139 (1-2), pp.50-55. ⟨10.1007/s10562-010-0391-3⟩. ⟨hal-00604706⟩

  • Article dans une revue

Mechanism and deactivation process of the conversion of methylbutynol on basic faujasite monitored by operando DRIFTS

Jean-Francois Groust, Guylene Costentin, Jean-Marc Krafft, Pascale Massiani

The successive steps occurring during conversion of methylbutynol (MBOH) on a basic NaX zeolite catalyst were characterized by combined micro-GC and operando DRIFT spectroscopy, assocd. to TPD-MS expts. These techniques permit to reveal a very strong and fast initial decrease in MBOH consumption,…

Physical Chemistry Chemical Physics, 2010, 12 (4), pp.937-946. ⟨10.1039/b919733h⟩. ⟨hal-00604717⟩

  • Article dans une revue

Impact of sorbitol addition on the structure and performance of silica-supported cobalt catalysts for Fischer-Tropsch synthesis

Hong Jingping, Eric Marceau, Andrei Y. Khodakov, Anne Griboval-Constant, Camille La Fontaine, Françoise Villain, Valérie Briois, P.A. Chernavskii

The paper focuses on the impact of sorbitol addition on the genesis of cobalt active phases in silica-supported catalysts and on their performance in Fischer-Tropsch synthesis. The catalysts were characterized by ex situ and in situ diffuse reflectance spectroscopy in the ultraviolet and visible…

Catalysis Today, 2011, 175 (1), pp.Pages 528-533. ⟨10.1016/j.cattod.2011.03.007⟩. ⟨hal-00663000⟩

  • Article dans une revue

Influence of the texturalproperties of porousaluminas on the reducibility of Ni/Al2O3 catalysts

Faiza Bentaleb, Eric Marceau

Temperature-programmed reduction (TPR) profiles recorded on calcined Ni/Al2O3 catalysts exhibiting the same Ni(II) surface density (3 Ni2+ nm−2) suggest that nickel speciation and reducibility are significantly influenced by the specific surface area and texturalproperties of aluminas, and by their…

Microporous and Mesoporous Materials, 2012, 156, pp.40-44. ⟨10.1016/j.micromeso.2012.02.018⟩. ⟨hal-00686937⟩

  • Article dans une revue

Salt concentration and pH-dependent adsorption of two polypeptides on planar and divided alumina surfaces; in situ IR investigations.

Claire-Marie Pradier, Vincent Humblot, Lorenzo Stievano, Christophe Méthivier, Jean-François Lambert

The adsorption of proteins is the first process to take place when a solid is immersed in a biological fluid; though not yet thoroughly understood at a molecular level, this process is also known to be strongly influenced by the presence of salt in solution or by pH changes. In the present work,…

Langmuir, 2007, 23, pp.2463-2471. ⟨10.1021/la062208p⟩. ⟨hal-00138685⟩

  • Article dans une revue

Remarkable activity of Ag/Al2O3/cordierite catalysts in SCR of NO with ethanol and butanol

Pavlo Kyriienko, Nataliia Popovych, Sergiy Soloviev, Svitlana Orlyk, Stanislaw Dzwigaj

Structured silver-alumina catalysts were prepared by the one-step deposition of Al2O3 directly on the surface of cordierite block matrices with subsequent incipient wetness impregnation of Al2O3/cordierite with an AgNO3 aqueous solution. The catalysts were characterized by BET, XRD, XPS and FTIR…

Applied Catalysis B: Environmental, 2013, 140-141, pp.691-699. ⟨10.1016/j.apcatb.2013.04.067⟩. ⟨hal-00911716⟩

  • Article dans une revue

The similarities and differences in structural characteristics and physico-chemical properties of AgAlBEA and AgSiBEA zeolites

Stanislaw Dzwigaj, Nataliia Popovych, Pavlo Kyriienko, Jean-Marc Krafft, Sergiy Soloviev

AgAlBEA and AgSiBEA zeolites have been prepared by two preparation procedures. The conventional wet impregnation is used to obtain AgAlBEA with silver present mainly in extra-framework position. The two-step postsynthesis procedure which consists of first creating the vacant T-atom sites with…

Microporous and Mesoporous Materials, 2013, 182, pp.16-24. ⟨10.1016/j.micromeso.2013.08.009⟩. ⟨hal-00907753⟩

  • Article dans une revue

Preparation of thin film gold based catalysts for oxidation reactions in liquid and gas phases

Anne-Félicie Lamic-Humblot, Philippe Barthe, Guillaume Guzman, Laurent Delannoy, Catherine Louis

This work deals with the preparation of gold on titania catalysts to make catalytic films in the less than 100 nm thickness area and its comparison with usual powder catalyst in catalytic oxidation reactions in gas and liquid phases. Titania was coated on glass plates with different thicknesses,…

Thin Solid Films, 2012, 527, pp.96-101. ⟨10.1016/j.tsf.2012.11.096⟩. ⟨hal-00906344⟩

  • Pré-publication, Document de travail

Preparation of Supported Gold Nanoparticles by a Modified Incipient Wetness Impregnation Method

Laurent Delannoy, Nissrine El Hassan, Andrea Musi, Nga Nguyen Le To, Jean-Marc Krafft, Catherine Louis

In this work, we show that if the mere procedure of impregnation of oxide supports with chloroauric acid, which is well-known to lead to large gold particles, is followed by a step of washing with ammonia, small gold particles (3-4 nm) can be obtained after a treatment of calcination at 300 °C on…

2006. ⟨hal-00115962⟩

  • Article dans une revue

Loop-stabilized BAB triblock copolymer morphologies by PISA in water

Pauline Biais, Patricia Beaunier, François Stoffelbach, Jutta Rieger

A straightforward strategy to synthesize in water, loop-stabilized particles via PISA is developed. These particular structures can in theory be obtained through the synthesis of amphiphilic BAB triblock copolymers, starting from a hydrophilic middle block A, which is chain extended in an aqueous…

Polymer Chemistry, 2018, 9 (35), pp.4483-4491. ⟨10.1039/C8PY00914G⟩. ⟨hal-02374121⟩