Honeycomb ceramic chemical ceramic catalyst substrate for automobile exhaust pipe

Ceramic honeycomb substrate is used as catalytic converters of gasoline engines, the honeycomb ceramic catalyst substrates are coated with noble metals to be catalyst. Meanwhile, we improve the specific surface areas and cut down the heat capacity to increase the catalytic function. When the noxious emissions pass through, HC, C

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Ceramic honeycomb substrate is used as catalytic converters of gasoline engines, the honeycomb ceramic catalyst substrates are coated with noble metals to be catalyst. Meanwhile, we improve the specific 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.

Honeycomb Ceramic Chemial Ceramic Catalyst Substrate for Car Exhaust Pipe

Automobile exhaust gases are conventionally purified with a catalyst supported on a ceramic body able to withstand high temperatures. The preferred catalyst support structure is a honeycomb configuration which includes a multiplicity of unobstructed parallel channels sized to permit gas flow and bounded by thin ceramic walls. The walls of these channels provide the surface for precious-metal catalysts that convert noxious emissions into carbon dioxide, nitrogen and water vapor. We can provide honeycomb ceramic substrate has been coated and non-coated precious-metal.

Features:
*High specific surface area: Ensure exhaust gas could contact weigh catalyst enough
*Stable water absorption: Guarantee catalyst could be firmly and evenly coated on the surface of substrate, so it's 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 won't 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
 
SiO2Al2O3MgOFe2O3Na2OK2O
48-51%31-34%14-16%<0.5%<0.5%<0.5%
IndexValue
Cordierite gross density(g/cm3)1.9-2.0
Average linear expansion(20-1000celsius degree) (10-6/k-1)<2
Specific heat capacity(KJ/Kg)830-900
Temperature cycle resistance(K)300
Max operation Temp.(celsius degree)1300
Thermal shock resistance(celsius degree)800
Acid resistance(%)>99
Alkali resistance(%)>85
 
Spec.Quantity of channelsWall thickness (mm)Surface area (m2/m3)Free volume (%)Average weight (min.) (kg/m3)
150*150*30060*600.5131570680
150*150*30050*500.7105058680
150*150*30040*400.788365518
150*150*30025*251.057367502

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