Výsledky vyhledávání - "Virginie Harle"

On the reducibility of sulfated Pt/CeXZr1−XO2 solids: A coupled thermogravimetric FT-IR study using CO as the reducing agent

Autor: Virginie Harle, Jean Claude Lavalley, A. M Le Govic, Philippe Bazin, Olivier Marie, Gilbert Blanchard, Marco Daturi, Odette Saur

Publikováno v: Applied Catalysis B: Environmental
Applied Catalysis B: Environmental, Elsevier, 2012, 119 (DOI: 10.1016/j.apcatb.2012.02.037), pp.207--216

The reducibility of sulfate species by CO was studied over ceria and Ce0.63Zr0.37O2 mixed oxide with or without platinum, using infrared spectroscopy and thermogravimetry. The mechanism for sulfate reduction appeared to be based on three main points.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1f77abb860732132a0e912f5e2a01f19
https://doi.org/10.1016/j.apcatb.2012.02.037

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Multi-component zirconia–titania mixed oxides: Catalytic materials with unprecedented performance in the selective catalytic reduction of NOx with NH3 after harsh hydrothermal ageing

Autor: Virginie Harle, Claire Savill-Jovitt, Bernard Coq, Emmanuel Rohart, Rui Jorge Coelho Marques, Nathalie Marcotte, Robert Durand, Philippe Bichon, Romain Cavalier

Publikováno v: Applied Catalysis B: Environmental
Applied Catalysis B: Environmental, Elsevier, 2011, 105, pp.373-376. ⟨10.1016/j.apcatb.2011.04.022⟩

Standing harsh hydrothermal treatment (∼10% H 2 O, ∼1050 K) is a prerequisite for deNO x catalysts of tomorrow in diesel exhaust gas treatment. New catalytic materials composed of Mn-, Fe- and Ce-ZrTiSiW mixed oxide were evaluated in the selectiv

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2dad72fab8a4570b18c13f4f3aff2777
https://doi.org/10.1016/j.apcatb.2011.04.022

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Molybdocobaltate cobalt salts: New starting materials for hydrotreating catalysts

Autor: Carole Lamonier, Jean Mazurelle, Catherine Martin, Edmond Payen, Denis Guillaume, Virginie Harle

Publikováno v: Applied Catalysis B: Environmental
Applied Catalysis B: Environmental, Elsevier, 2006, doi:10.1016/j.apcatb.2005.12.027
Applied Catalysis B: Environmental, 2006, doi:10.1016/j.apcatb.2005.12.027

International audience; This paper deals with the use of Anderson heteropolyanions as alternative starting materials to the ammonium heptamolybdate and cobalt nitrate for the preparation of hydrotreatment oxidic precursors. Ammonium and cobalt salts

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f8aa84e6d601cf3f79ea4c45aa98cfb7
https://doi.org/10.1016/j.apcatb.2005.12.027

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Operando systems for the evaluation of the catalytic performance of NOx storage and reduction materials

Autor: Gilbert Blanchard, Virginie Harle, A. Sassi, A. Lahougue, Philippe Bazin, B.I. Mosqueda-Jiménez, Marco Daturi

Publikováno v: Catalysis Today. 119:73-77

Operando measurements were carried out in a quartz reactor to evaluate the catalytic performance of NO x storage and reduction materials containing Pt and Ba supported on Al 2 O 3 . Carbonates present on the surface after activation were removed afte

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2e5f4e0542927a207e818db3f66a0dd1
https://doi.org/10.1016/j.cattod.2006.08.015

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Evidence and Characterization of a New Decamolybdocobaltate Cobalt Salt: An Efficient Precursor for Hydrotreatment Catalyst Preparation

Autor: Olivier Mentré, Edmond Payen, Catherine Martin, Michel Fournier, Virginie Harle, Carole Lamonier, Denis Guillaume

Publikováno v: Chemistry of Materials
Chemistry of Materials, American Chemical Society, 2005, 17, pp.4438. ⟨10.1021/cm0503634⟩
Chemistry of Materials, 2005, 17, pp.4438. ⟨10.1021/cm0503634⟩

International audience; Heteropolyanions (HPAs) based on molybdenum and cobalt could be used as an alternative to the conventional ammonium heptamolybdate and cobalt nitrate precursors for the preparation of Co-Mo/ Al2O3 hydrotreating catalysts. With

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7dba5bff336c82467b27d5103c8aa65a
https://doi.org/10.1021/cm0503634

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Contribution of Analytical Tools for the Understanding of Sediment Formation: Application to H-Oil® Process

Autor: Stephane Kressmann, Bernadette Rebours, James J. Colyar, Eric C. Robert, Isabelle Merdrignac, Virginie Harle

Publikováno v: Petroleum Science and Technology. 21:615-627

Analytical studies were performed concerning the H-Oil® Process to better understand the mechanisms involved during residue conversion and the possible formation of sediment. Asphaltenes present in residue are known to behave as colloidal species si

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::828e454b6414e2424bc6a2d00662bfd2
https://doi.org/10.1081/lft-120018542

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Reactivity of Doped Ceria-Based Mixed Oxides for Solar Thermochemical Hydrogen Generation via Two-Step Water-Splitting Cycles

Autor: Stéphane Abanades, Alex Le Gal, Virginie Harle, Nicolas Bion, Thierry Le Mercier

Publikováno v: Energy and Fuels
Energy and Fuels, American Chemical Society, 2013, 27 (10), pp.6068-6078. ⟨10.1021/ef4014373⟩

International audience; Ceria-type materials were investigated as reactive chemical intermediates, in view of solar thermochemical hydrogen production via two-step water-splitting. Ceria/zirconia mixed oxides and ceria doped with yttrium, lanthanum,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::18943aeae6ba5dccdb0b33b03d2f2b7d
https://hal.archives-ouvertes.fr/hal-00963576

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Thermodynamic and experimental studies of catalytic reforming of exhaust gas recirculation in gasoline engines

Autor: Daniel Duprez, Séverine Rousseau, S. Rijo Gomes, Virginie Belliere-Baca, Gilbert Blanchard, Virginie Harle, Nicolas Bion, Florence Epron

Publikováno v: Applied Catalysis B: Environmental
Applied Catalysis B: Environmental, Elsevier, 2011, 102 (1-2), pp.44-53. ⟨10.1016/j.apcatb.2010.11.023⟩

The catalyst 1 wt% Rh supported on ZrO 2 (73.8 wt%)–La 2 O 3 –Nd 2 O 3 –Y 2 O 3 (26.2 wt%) was tested for the reforming of exhaust gas recirculation (REGR) on gasoline engines. Isooctane (C 8 H 18 ) was used as molecule representative of gasoli

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3f2b6be69583ddf4c75c7e82a4ea1058
https://hal.archives-ouvertes.fr/hal-02109844

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A thermogravimetric and FT-IR study of the reduction by H2 of sulfated Pt/CexZr1-xO2 solids

Autor: Odette Saur, A. M Le Govic, Virginie Harle, Gilbert Blanchard, Frederic Meunier, Jean Claude Lavalley, Marco Daturi, Philippe Bazin

Publikováno v: Applied Catalysis B: Environmental
Applied Catalysis B: Environmental, Elsevier, 2009, 90 (3-4), pp.368--379
Applied Catalysis B: Environmental, 2009, 90 (3-4), pp.368-379

The nature, concentration and reducibility by H 2 of sulfate species formed from SO 2 oxidation were studied over a range of Pt/Ce x Zr 1− x O 2 catalysts using infrared spectroscopy and thermogravimetry. Ionic sulfates were formed over ceria and C

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::3fd75026abc544f9b0dc14d274b75ea6
https://hal.archives-ouvertes.fr/hal-01840546

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