Ceramic Catalytic Converter Substrate Used in Cars

Product Description

Honeycomb Ceramic Catalyst substrate used in cars:
used as catalystic converters of gasoline engines, the honeycomb ceramic catalyst substrates are coated by catalyst; at the same time, we improve the specific surface areas and cut down the heat capacity to increase the atalytic function. When the noxious emissions pass through, HC, CO and NOX will be converted into harmless components.
Diesel particulate filter bases on honeycomb ceramic substrate, whose materials are cordierite or carborundum. It could trap the particulate matter from disel exhaust emissions, so they are applied on cars, buses, trucks and so on.
Advantages:
>High specific surface area: ensure exhaust gas could contact with catalyst enough.
>Stable water absorption: guarantee catalyst could be firmly and evenly coated on the surface of substrate, so it is no waste for too thick coating.
>Warm-up characters: after starting up engine, the temperature of substrate could reach the active temperature of catalyst in the shortest time.
>Low exhaust resistance: ask exhaust resistance of substrate to engine low, so that it will not affect the performance of engine.
>High intensity: substrates work in bumpy cars, so the intensity of substrates must be too high to be destroyed.
>Perfect assembly: substrates are parts of exhaust; perfect appearance and exact dimension could ensure assembly perfect.

	Item	Index
Heat Property	Coefficient of heat expansion (40-800celsius degree) (x10-6/celsius degree)	<1.0
Heat Property	Specific heat [J/(g.k)]	0.84
Heat Property	Softening temperature (celsius degree)	1400
Heat Property	Melting point (celsius degree)	1455
Heat Property	The highest working temperature (celsius degree)	1350
Physical Property	Fine mesh bulk (cm3/g)	0.2
Physical Property	Apparent porosity (%)	36
Physical Property	Average fine aperture (um)	4
Mechanical Property	Compress breaking strength (Mpa)	Aaxes>8.3 Baxes>1.1 Caxes>0.1
Thermal Shock Resistance	Aire cooled temperature difference (celsius degree)	>650

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