Fumed mixed oxides

AEROSIL® fumed silica—product groups

Fumed mixed oxides
AEROSIL^® grades	BET surface area [m²/g]	Loss on drying [wt.%]	pH	Chemical composition
AEROSIL^® MOX 80	80 ± 20	< 1.5	3.6‑4.5	SiO₂/Al₂O₃
AEROSIL^®COK 84	185 ± 30	< 1.5	3.6‑4.3	SiO₂/Al₂O₃

The data represents typical values.

AEROSIL^® MOX grades are recommended for the production of highly-loaded low viscous aqueous dispersions. The fumed mixed oxides are manufactured (co-fumed) using the AEROSIL^® process as previously described, and may be regarded as a mixture of SiO₂ and Al₂O₃ on the molecular level. AEROSIL^® COK 84 is a physical mixture of SiO₂ and Al₂O₃ which provides strong thickening effects in aqueous media.

Positive effects:

High-loading levels of MOX grades in dispersions
Strong thickening effect in polar media with AEROSIL^®COK 84
Catalyst support
Rheology control of greases and lubricants