Laboratoire de réactivité de surface

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  • Article dans une revue

How the acido-basic properties of Mg silicates and clays govern the catalytic mechanism of transesterification reactions

Longfei Lin, Elisa Silva Gomes, François Payan, Maguy Jaber, Jean-Marc Krafft, Guillaume Laugel, Hélène Lauron-Pernot

Choosing acido-basic properties of magnesium silicates to tune the transesterification mechanism in the liquid phase.

Catalysis Science & Technology, 2019, 9 (21), pp.6072-6084. ⟨10.1039/C9CY01475F⟩. ⟨hal-03990037⟩

  • Article dans une revue

A comparative in situ TEM and UV-visible spectroscopic study of the thermal evolution of Ag species dispersed on Al2O3 and NaX zeolite supports

Elie Sayah, Dalil Brouri, Pascale Massiani

The oxidation states and dispersion of silver supported on alumina and faujasite were monitored by TEM, TPR and in situ UV-visible spectroscopy along the steps of thermal dehydration, then oxidation and finally reduction of the freshly prepared materials. An original transmission electron…

Catalysis Today, 2013, 218-219, pp.10-17. ⟨10.1016/j.cattod.2013.06.003⟩. ⟨hal-00958109⟩

  • Article dans une revue

Ethanol Conversion into 1,3-Butadiene by Lebedev Method over MTaSiBEA Zeolites (M= Ag, Cu, Zn)

Pavlo I. Kyriienko, Olga V. Larina, Sergiy O. Soloviev, Svitlana M. Orlyk, Christophe Calers, Stanislaw Dzwigaj

Tantalum-containing SiBEA zeolite with isolated framework mononuclear Ta(V) doped with Ag, Cu and Zn were prepared and characterized by XRD, XPS, DR UV-VIS and FTIR (with pyridine, 2,6-di-tert-butylpyridine, pyrrole and deuterated chloroform). The conversion of ethanol as renewable raw material…

ACS Sustainable Chemistry & Engineering, 2017, ⟨10.1021/acssuschemeng.6b01728⟩. ⟨hal-01437547⟩

  • Article dans une revue

Identification of iron species in FeSiBEA by DR UV-vis, XPS and Mössbauer spectroscopy: Influence of Fe content

J. Gurgul, K. Łątka, I. Hnat, J. Rynkowski, S. Dzwigaj

The nature of iron in FeSiBEA zeolite was identified using DR UV-vis, XPS and Mössbauer spectroscopy. Various FexSiBEA zeolites (x = 3.8, 8.2 and 15 wt.%) were prepared by a two-step post synthesis method, which consisted in the creation of vacant T-atom sites by dealumination of tetraethylammonium…

Microporous and Mesoporous Materials, 2013, 168, pp.1-6. ⟨10.1016/j.micromeso.2012.09.015⟩. ⟨hal-00812092⟩

  • Article dans une revue

The remarkable effect of the preparation procedure on the catalytic activity of CoBEA zeolites in the Fischer-Tropsch Synthesis

Karolina A. Chalupka, Sandra Casale, Ewa Zurawicz, Jacek Rynkowski, Stanislaw Dzwigaj

This work deals with the investigation of the influence of the preparation procedure and Co content on the activity of CoBEA zeolite in Fischer – Tropsch synthesis. For this purpose the Co-containing zeolites were prepared by a conventional wet impregnation (CoxAlBEA series) and a two-step…

Microporous and Mesoporous Materials, 2015, 211, pp.9-18. ⟨10.1016/j.micromeso.2015.02.024⟩. ⟨hal-01130202⟩

  • Article dans une revue

Tuning the shape and size of hybrid gold nanoparticles by porphyrins using seed-mediated synthesis

Jolanda Spadavecchia, Sandra Casale, Jessem Landoulsi, Claire-Marie Pradier

We report the synthesis of hybrid gold nanostructures by means of seed/growth approach, using porphyrin molecules (protoporphyrin IX) in addition to cetyltetraammonium bromide (CTAB) as surfactants and/or shape-modulating agents. The combination of CTAB and porphyrin yields stable complexes that…

Chemical Physics Letters, 2014, 609, pp.134-141. ⟨10.1016/j.cplett.2014.06.008⟩. ⟨hal-01078002⟩

  • Article dans une revue

New ammonium surfactant-stabilized rhodium(0) colloidal suspensions: influence of novel counter-anions on physico-chemical and catalytic properties.

Elodie Bile Guyonnet, Rita Sassine, Audrey Denicourt-Nowicki, Franck Launay, Alain Roucoux

Novel anionic species, such as hydrogen carbonate (HCO(3)(−)), fluoride (F(−)), triflate (CF(3)SO(3)(−)), tetrafluoroborate (BF(4)(−)) and chloride (Cl(−)) were investigated as new partners of water soluble N,N-dimethyl-N-cetyl-N-(2-hydroxyethyl) ammonium salts, used as a protective agent of…

Dalton Transactions, 2011, 40 (24), pp.6524-31. ⟨10.1039/C0DT01763A⟩. ⟨hal-00668358⟩

  • Article dans une revue

Catalytic activity of HAlBEA and NixHAlBEA zeolites in hydrogen-assisted dehydrochlorination of 1,2-dichloroethane into vinyl chloride monomer

Rafal Baran, Anna Srebowata, I.I. Kaminska, D. Łomot, Stanislaw Dzwigaj

HAlBEA zeolite is prepared by calcination of parent TEABEA zeolite at 823 K for 3 h in air following ionic exchange with NH4NO3 solution. NixHAlBEA zeolites are prepared by impregnation of HAlBEA with an aqueous solution of Ni(NO3)2, following a drying at 333 K to obtain NixHAlBEA. The calcination…

Microporous and Mesoporous Materials, 2013, 180, pp.209-218. ⟨10.1016/j.micromeso.2013.06.037⟩. ⟨hal-00910991⟩

  • Article dans une revue

Corrosion propagation monitoring using electrochemical noise measurements on carbon steel in hydrogenocarbonated solution containing chloride ions

Chloé Comas, François Huet, Kieu Ngo, Marion Fregonese, Hassane Idrissi, Bernard Normand

The propagation of localized corrosion on API 5 L X65 carbon steel in hydrogenocarbonated solution containing chloride ions was monitored during long immersion times by electrochemical noise (EN) measurements in ZRA mode. Monitoring corrosion propagation from the EN amplitude is possible but…

Corrosion Science, 2021, 193, pp.109885. ⟨10.1016/j.corsci.2021.109885⟩. ⟨hal-03387864⟩

  • Thèse

Sensibilité de la réaction de conversion de l'éthanol en n-butanol à la structure des hydroxyapatites : mode de fonctionnement, Sensitivity of the ethanol conversion in n-butanol to the hydroxyapatite structure

Manel Ben Osman

Les hydroxyapatites (HAps) sont des matériaux basiques qui présentent des propriétés catalytiques atypiques, notamment une sélectivité importante en butanol à partir de l’éthanol. Leur versatilité en termes de composition et de morphologie, facilement contrôlée par la synthèse, s’accompagne d’une…, StructureHydroxyapatites (HAps) are basic materials which exhibit atypical catalytic properties, particularly a high selectivity in n-butanol from ethanol’s conversion. Versatility in terms of composition and morphology, easily tuned by synthesis, is accompanied by a high modularity of acid-base…

Science des matériaux [cond-mat.mtrl-sci]. Université Pierre et Marie Curie - Paris VI, 2014. Français. ⟨NNT : 2014PA066567⟩. ⟨tel-01231353⟩