Activated Alumina
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Activated Carbon
Silica Gel
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Type C Silica Gel
Type C Silica Gel
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Molecular formula: xSiO2¡¤yH2O
Molecular weight: 60.08
Size: 1-8mm
Type C silica gel also called silochrom
Technical parameters
|
Item |
Unit |
Typical values |
|
Appearance |
cream, translucent, lump, ball |
|
|
Loss on heating |
% |
¡Ü5.2 |
|
Pore volume |
ml/g |
¡Ý0.92 |
|
Qualified ratio of spherical granules |
% |
¡Ý92 |
|
Bulk density |
g/l |
451 |
|
PH |
|
6.5-7.5 |
|
Pore volume |
ml/g |
0.8--1.0 |
|
Average pore diameter |
nm |
8.0--10.0 |
|
Specific surface area |
m2/g |
300--400 |
|
Specific heat |
KJ/KG.¡æ |
0.92 |
|
Thermal conductivity |
KJ/M.HR.¡æ |
0.167 |
|
Packing and size can be adjusted according to customer¡¯s different requirements. |
||
Packaging
15kg per compound bag
Application
Type C silica gel is a raw material for preparation of silica sand, after drying and screening can form silochrom, used as desiccant, adsorbent and catalyst carrier. It can be used for drug purification, removal organic acid and polymer from insulating oil, adsorption high molecular protein in industrial fermentation process, adsorption harmful elements in water, gas dehydration, goods moisture-proof rust prevention, pet packing and so on.
Introduction
Silica gel is transparent or ivory-white granular solid, main ingredients are amorphous silica. Silica gel does not dissolve in water and any solvents, non-toxic tasteless, not burning. Silica gel hasstable chemical properties, does not react with any material except the strong alkali, hydrofluoric acid. Silica gel has open porous structure, high adsorption properties, good thermal stability, stable chemical properties, high mechanical strength, etc.
Added dilute sulfuric acid (hydrochloric acid) into the aqueous solution of sodium silicate and let standing, thus becoming solid aqueous silicate gel. Used water washing to remove Na+ and SO42- (Cl-) ions dissolved in the electrolyte, after drying it is silica gel. Different manufacturing methods form different microporous structure, different microporous structure form different models, such as macroporous silica gel, silochrom (type C silica gel), type B silica gel, fine-pored silica gel (type A silica gel).
Silica gel used for gas drying, gas absorption, liquid dehydration, chromatography, catalysts, etc.
Regeneration temperature
Silica gel can be removed moisture by the way of thermal desorption, desorption temperatures as follows:
Type C silica gel¡Ü600¡æ
Type A silica gel¡Ü200¡æ
Allochroic silica gel¡Ü120¡æ
Silica alumina gel¡Ü350¡æ