|
blue silica gel：
orange silica gel：
Fine-pored silica gel includes fine-pored spherical silica gel and fine-pored lumpy silica gel, which are transparent or semitransparent glass-like in appearance.
Fine-pored silica gel is also called Type-A silica gel.
Fine-pored silica gel includes fine-pored spherical silica gel and fine-pored lumpy silica gel, which are transparent or semitransparent glass-like in appearance.
Fine-pored silica gel is also called Type-A silica gel.
|
Item |
Unit |
Data |
|
Average pore diameter |
nm |
2.0-3.0 |
|
Specific surface |
M2/g |
650-800 |
|
Pore volume |
Ml/g |
0.35-0.45 |
|
Specific heat |
KJ/kg.°C |
0.92 |
|
Heat Conductivity |
KJ/m.Hr.°C |
0.63 |
Purpose: The gel is mainly used for desiccation and moisture absorption, and as catalyst carrier, adsorbent, separating agent and pressure-swing absorber as well.
Chemical Composition
|
Item |
Content |
Item |
Content |
|
SiO2 |
99.6% |
Na2O |
0.17% |
|
Fe2O3 |
0.02% |
MgO |
0.01% |
|
CaO |
0.04% |
Al2O3 |
0.16% |
Technical Specification
|
Item |
Typical Data |
|
|
Absorptive capacity |
RH=20%, % ≥ |
11.2 |
|
RH=50%, % ≥ |
29.2 |
|
|
RH=90%, % ≥ |
37.6 |
|
|
Heat loss |
% |
≤1.0 |
|
pH Value |
|
4 |
|
Specific resistance |
Ω.cm |
≥5630 |
|
Silicon dioxide content |
% |
≥ 98.5 |
|
Percent of pass of spherical particle |
% |
≥90 |
|
Granularity |
mm |
3-5 |
|
Bulk density |
g/L |
784 |
