Acid precipitation of silica or silicate, used as carrier for e.g. catalyst, choline chloride solution, fragrance or detergent, in plastics, battery separator, toothpaste, or as flocculant, uses constant cation excess

摘要

In the production of a precipitated silica or silicate by simultaneously dosing an aqueous silicate solution and a Lewis and/or Bronsted acid into aqueous silicate solution , reacidification to pH 7-3.0, filtration and drying, a constant cation excess is maintained during dosing.