Structure Characterization and Catalytic Properties of Cr2O3 Doped with MgO Supported on MgF2

J. Goslara, M. Wojciechowskab, M. Zielińskib, I. Tomska-Foralewskab and W. Przystajkob aInstitute of Molecular Physics, Polish Academy of Sciences, Smoluchowskiego 17, 60-179 Poznań, Poland bFaculty of Chemistry, A. Mickiewicz University, Grunwaldzka 6, 60-780 Poznań, Poland

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Received: 24 04 2005;

A characterization of double oxide systems containing Cr2O3 doped with MgO and supported on MgF2 was carried out. The catalysts were prepared by impregnation and co-impregnation methods and characterized by the Brunauer-Emmett-Teller method, EPR, and temperature programmed reduction. The results proved the interactions between supported oxides and the presence of spinel-like phase after treatment at 400 ºC. Magnesium oxide clearly influences the catalytic activity as well as selectivity of chromium catalysts supported on MgF2. The MgO-Cr2O3/MgF2 systems were active and selective in the reaction of CO oxidation at the room temperature and in the dehydrogenation of cyclohexene.

DOI: 10.12693/APhysPolA.108.323 PACS numbers:76.30.Fc, 68.43.Fg, 82.65.+r