2019-02-28

Investment value and Prospect of ultra fine silica gel industry in 2011-2016

The release of"ultra fine silica aerogel -2011-2016 superfine silica aerogel industry investment value and future prospects of advisory report" on a thorough market research basis,mainly on the basis of the National Bureau of statist

2019-02-28

Preparation of macroporous mesoporous silica composites

A few days ago, the Chinese Academy of Sciences, Lanzhou Chemical Physics researcher Wang Qihua group of simple and efficient preparation of mesoporous silica composites with an aperture larger than 10 nm, can be widely used in catalysis,separation, biomedical and other fields. Related research has been published in the "nano scale".

2014-06-10

What is silica

Silica, chemistry, pure silica is colorless, is solid at normal temperature, chemical formula SiO, insoluble in water. Insoluble in acid, but soluble in hot concentrated hydrofluoric acid and phosphoric acid, and melt alkali works. There are two kinds of crystalline silica and amorphous silica in nature. Silica is so widely used, mainly used for glass, water glass, pottery, ceramic, refractory material, gas gel mat, ferrosilicon, sand, elemental silicon, cement and other, in ancient times. Silica is used to making porcelain glazed and carcass. The general stone is mainly composed of silica and calcium carbonate.

2014-06-24

Chemical properties of silicon dioxide

Relatively stable chemical properties. Not reacting with water. Is an acidic oxide, not with the general acid reaction. Gaseous hydrogen fluoride and silicon dioxide reaction to form four silicon fluoride. With the formation of hot concentrated alkali solution or molten alkali silicate and water. Reaction of silicate with various metal oxides at high temperature. Used for producing quartz glass, optical instruments, chemical containers, ordinary glass, refractory materials, optical fiber, ceramic, etc.. Properties of silica is inert, it was not associated with except Fluorine, hydrogen fluoride halogen, hydrogen halide and sulfuric acid, nitric acid, perchloric acid role (with the exception of hot concentrated phosphoric acid).