CATALYST, METHOD OF ITS PREPARATION AND METHOD OF FLUORINATING HALOGENATED HYDROCARBONS Russian patent published in 2011 - IPC B01J23/26 B01J21/04 B01J37/03 B01J37/26 C07C17/20 

FIELD: process engineering.

SUBSTANCE: invention relates to chemical industry, namely, to catalysts to be used in gas-phase fluorination of halogenated hydrocarbons. Proposed catalyst comprises chromium oxides, the main component, in amount of approx. 95-80 wt % wherein chromium oxidation corresponds to atomic ratio O/Cr varying from 1.6 to 2.0, and additional components of Me metal compounds selected from the group including: Al(III), Fe(III), Co(II), Ni(II), Zn(II), Mg(II) or whatever mix thereof in amount of 0.01-15.0 wt % in terms of oxides comprising water in amount of not over 3.0 wt %, anion admixtures, e.g. C, NO₃ ^-, SO₄ ^2- in amount of not over 0.15 wt %, carbon in amount of 0.5-5.0 wt %. It features shape of cylindrical granules with diameter of 3-10 mm, hardness of 5-40 kg/cm², bulk density of 0.4-0.8 g/cm³, specific surface of 50-250 m²/g, pore volume making at least 0.3 cm²/g, and single-mode distribution of pore sizes in the range of 200-500 Е. Invention covers also method of producing above described catalyst and method of fluorinating halogenated hydrocarbons using said catalyst.

EFFECT: higher catalyst activity at 300-380°C, high strength and satisfactory pore structure.

7 cl, 9 ex, 2 tbl, 5 dwg