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Elucidation of the zeolite role on the hydrogenating activity of Pt-catalysts

Abstract : Toluene hydrogenation was studied over model catalysts with a fixed hydrogenating function (Pt/Al2O3) mechanically mixed with either HUSY or HBEA zeolites. Such mechanical mixtures showed improved platinum turnover frequencies compared to single Pt/Al2O3. Comparing to Pt-impregnated zeolite catalysts, themechanical mixtures have lower activities per site showing that the contribution of acid sites decreases (and so the hydrogenating activity with increased distance between Pt clusters and acid sites. Therefore, toluene hydrogenation can be used as a powerful tool to evaluate Pt-acid site intimacy in bifunctional catalysts.
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Submitted on : Thursday, May 11, 2017 - 12:48:20 PM
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Pedro Mendes, André Gregorio, Antoine Daudin, Christophe Bouchy, Joao Silva, et al.. Elucidation of the zeolite role on the hydrogenating activity of Pt-catalysts. Catalysis Communications, Elsevier, 2017, 89, pp.152-155. ⟨10.1016/j.catcom.2016.11.006⟩. ⟨hal-01517156⟩

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