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Nanoparticules de nickel supportées sur silice préparées en milieu aqueux : Mécanismes de formation. Caractérisation. Propriétés de surface

Abstract : The work of A. Boudjahem deals with nickel catalysts supported on silica prepared by nickel acetate reduction by aqueous hydrazine. The kinetics and mechanisms of the metal particles formed have been studied. The obtained particles have been characterized by XRD, TEM, XPS, BAM, BET, H2 Chemisorption and TPD techniques. Their catalytic performances have been tested in benzene and acetylene hydrogenation reactions. H2 spillover, kinetics and mechanisms in benzene hydrogenation have been studied. The obtained results showed that the supported nanoparticle surface properties strongly depended on their size and shape, which, in turn, depended on thermal pretreatments, nature and texture of the support, the mode of the precursor reduction.
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Submitted on : Thursday, March 29, 2018 - 10:45:23 AM
Last modification on : Thursday, September 24, 2020 - 2:29:10 PM

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Abdel-Ghani Boudjahem. Nanoparticules de nickel supportées sur silice préparées en milieu aqueux : Mécanismes de formation. Caractérisation. Propriétés de surface. Autre. Université Henri Poincaré - Nancy 1, 2003. Français. ⟨NNT : 2003NAN10103⟩. ⟨tel-01746816⟩

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