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  1. 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)

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    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)

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    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)

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    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)