Abstract:MgAl 2 O 4 spinel employed as support of reforming catalysts was doped by CeO 2 . The samples were prepared by wet impregnation from aqueous solutions of cerium nitrate, with and without chelating agents. The chelating agents used were ethylenediaminetetraacetic acid (EDTA), nitrilotriacetic acid (NTA) and citric acid (CA) at different pH of impregnation. The solids were characterized by TG, XRD, S BET , TPR, SEM-EDX and CO 2 −TPD. Nanoparticles of CeO 2 between 5 and 6.8 nm were obtained by the thermal decomp… Show more
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