Studies on preparation of Cr_2O_3-graphite intercalation compounds by vacuum heat treatment

Cr_2O_3-graphite intercalation compounds (GICs)were prepared using graphite and CrO_3 as raw materials by vacuum heat-treatment.The stage 5 GICs was formed after heat treatment at 1400℃,and it was examined and characterized by X-ray diffraction (XRD).The XRD analysis of intercalation compounds indicated that a number of non-carbon reactant (atom,molecule,ion or groups)could intercalate the layers of graphite with reticulated layer structure physically.Consequently the layered structure of graphite changed and thus new physical and chemical properties were obtained.X-ray photoelectron spectroscopy (XPS)suggested that the compound intercalated into graphite should contain Cr~(?)compound.