Abstract
We investigated the effects of different Cu weight ratio on θ or γ-Al2O3 which were impregnated with platinum in terms of catalytic activity for propane dehydrogenation and physicochemical properties. 1.5 wt% Pt, 0-10 wt% Cu catalyst supported on θ-Al2O3 or γ-Al2O3 was prepared by incipient wetness co-impregnation. Enhanced Pt dispersion by increasing Cu contents in γ-Al2O3 supported catalyst was confirmed via XRD and XPS. Pt and CuO was separated in Pt-Cu/θ-Al2O3, but Pt-Cu alloy was identified after reduction treatment. Also, adding Cu in Pt/Al2O3 makes catalyst’s acidity lower and this property led to increased propylene yield in propane dehydrogenation. However, Pt3Cu was not good for yield of PDH, which was confirmed in Pt-10Cu/θ-Al2O3 through XRD.
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