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Porous ceramics are
used as catalyst carriers and filter media in various forms. Catalyst
carriers are used in the petrochemicals industry, while filter
media are used for water and waste liquid treatment. Noritake
has established technologies for controlling pore size distribution
and specific surface areas in a sophisticated manner. |
| • Catalyst carriers |
| Noritake's technology of controlling small pore
size distributions and specific surface areas enables high activity
and selectivity to be realized. Based on 30 years of experience,
Noritake meets requirements for partial oxidation catalyst carriers
destined for a variety of petrochemical businesses. |
<Chemical
composition>
| |
(%)
|
| Al2O3
|
80~99
|
| SiO2 |
0.5~20
|
| P2O5
|
0.3>
|
| Fe2O3
|
0.2>
|
| CaO |
0.2>
|
| MgO |
0.1>
|
| Na2O |
0.2~0.5
|
| K2O |
1.0>
|
|
<Typical pore size distribution for partial
oxidation catalyst carriers. >
|
<Physical
characteristics>
|
|
8 mm dia. Ring
|
|
Apparent
porosity
|
35~60%
|
|
Water
absorption (%)
|
20~40%
|
|
Bulk
specific gravity
|
1.5~2.0
|
|
Filling
density
|
0.7 - 1.0 kg/L
|
|
Crushing
strength
|
50 - 150N
|
|
Specific
surface area
|
0.1> -2.0 m2/g
|
|
|
| • Porous ceramics |
| Provided with a wide range of pore size and
large specific areas, porous ceramics developed for filter media
use have excellent adsorption characteristics. |
<Chemical
composition>
| |
(%)
|
| C |
0~10
|
| Al2O3
|
30~45
|
| SiO2 |
25~35
|
| P2O5
|
5~10
|
| Fe2O3
|
1~2
|
| CaO |
1~2
|
| MgO |
2~4
|
| Na2O |
1>
|
| K2O |
1~2
|
|
<Typical
pore size distribution for porous ceramics>
 |
|