Detailed Product Description
Honeycomb ceramic catalyst substrate:
Used as catalytic converters of gasoline engines, the honeycomb ceramic catalyst substrates are coated by catalyst; at the same time, we improve the specification surface areas and cut down the heat capacity to increase the catalytic function. When the noxious emissions pass through, HC, CO and NOx will be converted into harmless components.
Disel particular filter bases on honeycomb ceramic substrate, whose materials are cordierite or carborundum. It could trap the particulate matter from diesel exhaust emissions, so they are applied on cars, buses, trucks and so on.
Technology parameters of cordierite honeycomb ceramic regenerator
| Item | Index |
Heat property | Coefficient of heat expansion (40-800)(×10-6/) | <1.0 |
Specific heat [J/(g.k)] | 0.84 | |
Softening temperature () | 1400 | |
Melting point () | 1455 | |
The highest working temperature () | 1350 | |
Physical property | Fine mesh bulk (cm3/g) | 0.2 |
Apparent porosity (%) | 36 | |
Average fine aperture (um) | 4 | |
Thermal shock resistance | Air cooled temperature difference () | >650 |
The necessary property of honeycomb ceramic catalyst substrate used in cars
1. High specific surface area: ensure exhaust gas could contact with catalyst enough.
2. Stable water absorption: guarantee catalyst could be firmly and evenly coated on the surface of substrate, so its no waste for too thick coating.
3. Warm-up characters: after starting up engine, the temperature of substrate could reach the active temperature of catalyst in the shortest time.
4. Low exhaust resistance: ask exhaust resistance of substrate to engine low, so that it wont affect the performance of engine.
5. High intensity: substrates work in bumpy cars, so the intensity of substrates must be too high to be destroyed.
6. Perfect assembly: substrates are parts of exhaust; perfert appearance and exact dimension could ensure assembly perfect.
