The use of silicic acid

Silicic acid, usually Si ( OH ) 4 of silicate, or H4Si O4. Is a affectionate of anemic acid, its alkali hydrolysis in aqueous solution. Silicic acerbic free, including silicic acerbic (H2SiO3 ), two ( H2Si2O5 ), silicate acerbic is actual weak. Silicic acerbic ionization calm connected K1=2*10-10 ( allowance temperature ), tetraethyl orthosilicate is abiding in the ambit of PH2-3, but if the over saturated H4SiO4 band-aid placed for a continued time, there will be silica baggy precipitate, white precipitate, and the accelerate colloidal particles, or gel at. The gel is allotment of damp evaporation, dry solid gel can be a porous, namely accepted silica gel. The silica gel has able adsorption, can be acclimated to blot damp and dehydration agent, catalyst, or acclimated for added agitator carrier. Silicate burnished cellophane aberrant particles, baffling in acerbic ( except hydrofluoric acid), acrid in abrasive solution. And silica absolute added hydroxyl, is a affectionate of top authentic silica gel. Heated to 150℃into silica. With the angry and atomization acknowledgment of hydrofluoric acid. For adsorption of gas and steam, decolorization grease, wax, agitator and carrier preparation. For the assembly of tungsten solvent, actinic reagent, actinic assay of adsorbent on the acquaintance abettor and the chromatographic separation, silica and silicate abstracts manufacturing.

Silicic acid can be acclimated for damp assimilation adhesive. Acclimated as a desiccant, abnormally in food. Silicic acerbic colloid acclimated as breast filling. The alleged silicate refers to silicon, oxygen and added actinic elements (mainly aluminum, iron, calcium, magnesium, potassium, sodium and so on ) the accepted bounden compounds. In the earth's band are actual widespread, aggregate the a lot of rocks ( granite ) the capital agreement and soil. Due to the characteristics of the structure, array ( basal anatomy of silicate minerals is a silicon - oxygen tetrahedron; in this tetrahedron, silicon atoms absorb the center, four oxygen atoms four angle. These tetrahedra, with tetrahedral, according to altered coordination, the accumulation of assorted types of silicate). A lot of of them accept top melting point, abiding actinic property, is the capital raw actual of silicate industry. Silicate articles and abstracts are broadly acclimated in assorted industrial, accurate analysis and circadian life. Chemically, silicate refers to the admixture composed of silicon and oxygen ( SixOy ), sometimes aswell includes one or added metal or hydrogen. It is aswell acclimated to accurate produced by silica or silicate salt. Characteristics of silicate minerals is tetrahedron anatomy of them, sometimes these tetrahedron with chain, bifold chain, sheet, three-dimensional anatomy approach link. According to the amount of polymerization of silicate tetrahedron, subdivided into: Island silicate, annular silicate.

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