Abstract
Abstract A series of Pr-doped CuCl2–KCl/MgO-γ-Al2O3 catalysts (Cu 5 wt.%, MgO 10 wt.% and Cu/K = 1:2 molar ratio) has been prepared for the oxychlorination of C2H6 to C2H3Cl and characterized by XRD, H2-TPR, ICP, TEM and XPS techniques. The modifier Pr improves the surface and catalytic properties of Cu species in the catalysts for oxychlorination. It is found that the addition of Pr species can improve the electronic transfer from Pr to Cu species and promotes the formation of the reduced and active Cu species. In addition, the dopant promotes the dispersion of amorphous CuCl2 species. The best catalyst is CuKPr-5 with Pr (5 wt.%), which catalyzes the oxychlorination of C2H6 to C2H3Cl with highest conversion (97.5%) and the best selectivity (52%).
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