SILICON DIOXIDE GRANULES INTENDED FOR THERMAL TREATMENT Russian patent published in 2025 - IPC C01B33/12 C09C1/30 B01J2/22 B01J21/08 A61K9/16 

FIELD: chemistry.

SUBSTANCE: invention can be used in producing silicon dioxide granules used as catalyst carriers, pharmaceutical inert fillers, in cosmetic products, for heat insulation, as an abrasive material, a silicone rubber component. Pyrogenic silicon dioxide granules have a BET surface of 20 to 500 m²/g; number-average particle size, d₅₀, equal to 350 to 2000 mcm; value span=(d₉₀-d₁₀)/d₅₀ particle size distribution equal to 0.8–3.0; bulk density of more than 0.35 g/ml; pore volume >4 nm, equal to not more than 1.5 cm³/g. Also disclosed is a method of producing such granules and use thereof.

EFFECT: group of inventions enables to obtain granules of silicon dioxide, having increased bulk density, characterized by limited porosity and pore volume.

21 cl, 1 tbl, 3 ex