METHOD FOR ISOMERIZATION OF LIGHT GASOLINE FRACTIONS Russian patent published in 2008 - IPC C07C5/27 B01J23/40 B01J21/04 B01J21/06 B01J23/84 B01J27/53 

FIELD: chemical technology, fuels.

SUBSTANCE: invention relates to a method for isomerization of light gasoline fractions for preparing high-octane gasoline component. Invention describes a method for isomerization of light gasoline fractions that involves contacting raw with a catalyst comprising a hydrogenating component. Metal oxides of 3B, 4A, 7A and 8A groups of the periodic system of elements, and oxygen-containing sulfur ion wherein the process is carried out at enhanced temperature and pressure in the presence of hydrogen. As oxide component the catalyst comprises composition of the following metals: xFe₂O₃ x yMnO₂ x zTiO₂ x nAl₂O₃ x mZrO₂ in the following values of coefficients: x = (0.06-3.6) x 10^-3; y = (0.11-2.3) x 10^-3; z = (0.12-2.5) x 10^-3; n = (7.8-21.5) x 10^-2, and m = (63.3-74.7) x 10^-2, and wherein the mass ratio of oxygen-containing sulfur ion to the metal oxides composition is 0.042-0.178. Invention provides enhancing stability of the isomerization process. Invention can be used in oil-processing and oil and chemical industry.

EFFECT: improved method of isomerization.

5 ckm 2 tbl, 22 ex