CATALYST ON SILICA-CLAD ALUMINA SUPPORT Russian patent published in 2014 - IPC B01J21/04 B01J21/08 B01J23/00 B01J35/10 B01J37/02 B01J37/08 C08F10/02 

FIELD: chemistry.

SUBSTANCE: invention relates to catalysis. Described is an olefin polymerisation catalyst comprising: (I) a clad catalyst support comprising (a) a core which comprises alumina particles and (b) about 1-40 wt % silica, based on the weight of said cladding of the clad catalyst support on the surface of said core; said clad catalyst support having a BET surface area of not less than 20 m²/g; porosity of at least about 0.2 cm³/g; and a normalised sulphur uptake (NSU) value of up to 25 mcg/m²; and (II) 0.1-10 wt % , based on the weight of said catalyst, of catalytically active, with respect to olefin polymerisation, elemental transition metal, compound thereof, or complex thereof, wherein said transition metal is selected form Fe, Cr, Ti, Zr, Hf, Ni or mixture thereof, on the surface of said clad catalyst support. Methods of producing said catalyst and use thereof are described.

EFFECT: high catalyst activity.

21 cl, 2 dwg, 3 tbl, 12 ex