What is Type-B Silica Gel?
Issuing time:2022-11-04 17:45
Type-B silica gel is a kind of inorganic silica gel, which is a highly active adsorption material and an amorphous substance. Its chemical formula is mSiO2·nH2O. It is insoluble in water and any solvent, non-toxic and tasteless, chemically stable, and does not react with any substances except strong alkali and hydrofluoric acid.
High adsorption performance, good thermal stability, stable chemical properties, high mechanical strength, etc.
The pore structure of type B glue is between coarse and fine pore silica gel, the pore volume is 0.60-0.85ml/g, the average pore diameter is 4.5-7.0nm, and the specific surface is 450-650m2/g. Details: Typical values of project indicators ( 2-5mm) First-class adsorption capacity of first-class products% RH=20% ≥ 4.0 3.0 6.2 RH=50% ≥ 11.0 10.0 16.2 RH=90% ≥ 70.0 50.0 73.9 Heating loss, % ≤ 2.0 2.0 1.0 Specific resistance (Ω. cm) ≥ 5000 3000 12500 pH 5.5—7.5 4—8 6.7 Bulk density, g/L 500—600 500—600 518
Mainly used as air humidity regulator, catalyst and carrier, pet bedding, and as raw material for fine chemical products such as chromatography silica gel.