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  1. No Access

    Article

    Characterization of New Bimetallic Oxycarbide (MoWC0.5O0.6) for Bifunctional Isomerization of n-Heptane

    A new bimetallic oxycarbide was synthesized and characterized by XRD, TEM, EDS, XPS and adsorption–desorption of probe molecules. All the molybdenum was reduced and 35% of tungsten was present as WO ...

    A. -F. Lamic, C. -H. Shin, G. Djéga-Mariadassou, C. Potvin in Catalysis Letters (2006)

  2. No Access

    Article

    Supported Molybdenum Carbides Lie Between Metallic and Sulfided Catalysts for Deep HDS

    Hydrodesulfurization (HDS) of 4,6-dimethyldibenzothiophene on alumina-supported Mo2C has been studied. These catalysts are stable and active under deep HDS conditions (0-250 wt ppm S). However, although they are ...

    P. Da Costa, C. Potvin, J.-M. Manoli, M. Breysse, G. Djega-Mariadassou in Catalysis Letters (2003)

  3. No Access

    Article

    Novel phosphorus-doped alumina-supported molybdenum and tungsten carbides: synthesis, characterization and hydrogenation properties

    The effect of atomically dispersed phosphorus on Mo2C- and WC-supported γ-Al2O3 has been studied. Phosphorus was introduced via molybdenum or tungsten heteropolyanions. Mo- and W-based heteropolyanions were used ...

    P. Da Costa, C. Potvin, J.-M. Manoli, M. Breysse, G. Djéga-Mariadassou in Catalysis Letters (2001)

  4. No Access

    Article

    NOx storage on barium-containing three-way catalyst in the presence of CO2

    NOx trap** capability of “NOx storage–reduction” commercial catalysts (4–9 wt% Ba-containing three-way catalysts) was compared to that of bulk barium carbonate and alumina-supported barium carbonate from Rhodia...

    F. Rodrigues, L. Juste, C. Potvin, J.F. Tempère, G. Blanchard… in Catalysis Letters (2001)

  5. No Access

    Article

    Influence of CO2 on storage and release of NOx on barium‐containing catalyst

    A barium‐containing three‐way automotive emission catalyst was submitted to a NOx storage step in flowing lean gas mixture containing 340 ppm NO and 8 vol% O2 in helium. NOx release was carried out in the 250–550...

    S. Balcon, C. Potvin, L. Salin, J.F. Tempère, G. Djéga‐Mariadassou in Catalysis Letters (1999)

  6. No Access

    Article

    Characterization andn-heptane cracking/isomerization catalysis of tungsten oxynitrides on EMT zeolite

    Catalysts made of two tungsten precursors (one of them containing phosphorus) impregnated on EMT zeolite were nitridated in flowing pure ammonia and passivated by O2 (1 vol%) in an Ar stream leading to tungsten o...

    S. Sellem, C. Potvin, J. -M. Manoli, J. Maquet, G. Djéga-Mariadassou in Catalysis Letters (1996)

  7. No Access

    Article

    Influence of washing and of heat-treatment conditions on the thermal stability of VPI-5

    Thorough washing of a VPI-5 synthesized with n-dipropylamine as template improves greatly its thermal stability while no major change is observed in the template content. A detailed study of the influence of t...

    C. Potvin, J. M. Manoli, M. Briend, D. Barthomeuf in Catalysis Letters (1991)