Honeycomb monoliths with their high achievable surface areas per unit volume are utilized in catalyst carriers, active catalysis and air flow distributors, also used for heat exchanger processes, electro-chemical applications and carrier bodies for biological applications and still utilized in catalytic converters for purifying vehicle exhaust gas, reducing carbon monoxide, smog ect.. In addition to the listed standard geometries and materials of construction honeycomb monoliths are also available in other ceramic materials of construction and geometrical configurations.
Chemical composition
|
Al2O3
|
MgO
|
SiO2
|
Other
|
|
11-14%
|
32-36%
|
48-51%
|
<3%
|
Compressive strength
|
Direction
|
200T
|
400T
|
|
A(minimum)
|
15.0MPa
|
15.0MPa
|
|
B(minimum)
|
1.5MPa
|
1.5MPa
|
|
C(minimum)
|
0.2MPa
|
0.2MPa
|
|
Specimen dimensions diameter:25.4mm length:25.4mm from direction A,B and C,Where
A direction: parallel to passage ways
B direction: perpendicular to passage ways and parallel to passage way walls
C direction: perpendicular to passage ways and 45% to passage way walls
Speed:1mm/min
|
Porosity/water absorption
|
Item
|
200DT
|
400DT
|
|
Minimum
|
18.6%
|
17.8%
|
|
maximum
|
23.4%
|
20.7%
|
|
Average (n>5 per lot)
|
22.1%
|
19.6%
|
|
Total pore volume
|
0.18-0.24(cm³/g)
|
0.18-0.24(cm³/g)
|
Bulk density
|
100DT
|
0.46 cm³/g+-15%
|
|
200DT
|
0.43 cm³/g+-15%
|
|
300DT
|
0.50 cm³/g+-15%
|
|
400DT
|
0.48 cm³/g+-15%
|
Coefficient of Thermal Expansion
|
Item
|
200DT
|
400DT
|
|
Heating rate
|
5℃/min,20℃-1000℃
|
5℃/min,20℃-1000℃
|
|
Average
|
1.5*10-6/k-1
|
1.8*10-6/k-1
|
Thermal Conductivity
1.5…1.6 W/mk at temperature 25℃-600℃
Specific Heat Capacity
At:100℃200℃300℃
800KJ/Kg950KJ/Kg200KJ/Kg
Continuous High Temperature Durability
Maximum shrinkage of length after 100 hours at 1200℃
200 DT 400 DT
Maximum0.5%0.1%
High Temperature Stability
Maximum shrinkage after 100 hours at 1450℃
200 DT 400 DT
Maximum2.0%2.5%
Gas Flow Resistance
Flow speed 16m/s200DT 400 DT
Pressure drop{10-2mmAg/mm}60130
Structural Integrity to Thermal Shock
(cooling with water)
Cracks start at approx. 800℃
No destruction of ceramic bodies until approx. 1180℃
Softening temperature
Definition: temperature, at which the instantaneous rate of thermal expansion is zero.
Procedure: analogous to coefficient of thermal expansion; determination with extrapolation.
Minimum: 1380℃
Technical Specifications for Honeycomb Monolith Catalyst Carrier
|
Type
|
Cells per square inch
|
Wall
Thickness
mm
|
Channel width
mm
|
Channel
Area
m㎡
|
Free area percent
|
Inside surface area ㎡/liter
|
Approximate
Weight(g/liter)
|
|
DT-23
|
600
|
0.17
|
0.87
|
0.752
|
70
|
3.225
|
580
|
|
DT-24
|
600
|
0.20
|
0.84
|
0.700
|
65
|
3.114
|
580
|
|
DT-25
|
600
|
0.23
|
0.81
|
0.651
|
61
|
3.002
|
580
|
|
DT-26
|
400
|
0.17
|
1.10
|
1.210
|
75
|
2.728
|
480
|
|
DT-27
|
400
|
0.20
|
1.07
|
1.745
|
71
|
2.654
|
480
|
|
DT-28
|
400
|
0.23
|
1.04
|
1.082
|
67
|
2.579
|
480
|
|
DT-29
|
300
|
0.19
|
1.28
|
1.625
|
74
|
2.310
|
500
|
|
DT-30
|
300
|
0.22
|
1.25
|
1.550
|
70
|
2.260
|
500
|
|
DT-31
|
300
|
0.25
|
1.22
|
1.476
|
67
|
2.200
|
500
|
|
DT-32
|
200
|
0.21
|
1.58
|
2.490
|
77
|
1.957
|
435
|
|
DT-33
|
200
|
0.24
|
1.55
|
2.396
|
74
|
1.920
|
435
|
|
DT-34
|
200
|
0.26
|
1.53
|
2.335
|
72
|
1.895
|
435
|
|
DT-35
|
100
|
0.35
|
2.18
|
4.766
|
74
|
1.354
|
465
|
|
DT-36
|
100
|
0.38
|
2.15
|
4..635
|
72
|
1.334
|
465
|
|
DT-37
|
100
|
0.40
|
2.13
|
4.550
|
71
|
1.323
|
465
|
|
DT-38
|
50
|
0.64
|
3.00
|
9.000
|
67
|
0.672
|
565
|
|
DT-39
|
50
|
0.67
|
2.97
|
8.821
|
66
|
0.659
|
565
|
|
DT-40
|
50
|
0.69
|
2.95
|
8.703
|
65
|
0.650
|
565
|
