Carrier

Coating

Working principle and advantages of the three-way catalytic reactor

Purifying agent

Advantages

Note the three-way catalytic reactor

Channel geometric characteristics

Physical property

Typical product dimension

Our company successfully developed a variety of models of automotive catalytic converters, applicable to various types of models currently on the market, and emission standards. We provide customer made products to meet the actual needs of different requirements.

Automotive catalytic converters clearance of the three main pollutants can reach 90% of its total (hydrocarbons, CFCs and nitrous oxide). A complete catalyzing reaction depends on the fuel mixture in the smaller air-fuel ratio within the reservation. This air-fuel ratio is only through the normal oxygen sensor system to perform its functions to achieve.

Automotive catalytic converters consist from several parts of the shell, insulation protective cover, the middle segment, entry and exit cone segments, flexible clamping materials, anti-straight-through seal catalyst, in which the technical core of the catalyst acts as automotive catalytic converters, including carrier, two part coating.

Carrier

The basic material of carrier is ceramic (MgO2, Al2O3, SiO2). The purpose of the ceramics is to provide a bearer for catalyst coating inert physical structure. In order to obtain a large catalytic surface in a smaller volume, the surface of the carrier system is made into form of a honeycomb.

Coating

In the carrier surface coating layer, a very loose layer of activity-based metal oxide γ-AL2O3 is applied. Because the surface is very rough, so the actual use area is increased about 7,000 times. This greatly increases the active surface of the automotive catalytic converter and the ability to store oxygen. Outside the active layer, Zr, Ce, Rh, Pd, Pt and other precious metals are coated to improve the catalyst.

Working principle and advantages of the three-way catalytic reactor

Purifying agent

Our catalyst products consist of these three precious metals: palladium, platinum and rhodium. When carbon monoxide, hydrocarbons and nitrogen oxides pass by a three-way catalyst, the activity of the gas at high temperatures is improved. As a result, carbon monoxide is oxidized into carbon dioxide and hydrocarbons into water and carbon dioxide, nitrogen oxides are reduced to nitrogen. Oxidation reaction: HC+O2=H2O+CO2; reduction reaction: Nox+HC+CO=N2+H2O+CO2.

Advantages

Using a cellular ceramic substrate, with a low cost, the active component is strong adhesion, difficult to inactivation and long life; New Rare Earth - zirconium - titanium, increase the heat resistance and activity of the catalyst; transition metals, alkaline earth metal, a small amount of precious metals of active ingredients, with a purification rate, long life, low ignition temperature; new oxygen storage materials, reduces the ignition temperature of the catalyst and transition temperature.

Note the three-way catalytic reactor

1. Keep the engine in good working condition that is the ideal air-fuel ratio and safe combustion.
2. Avoid the cold start of the throttle.
3. The catalyst for the most suitable operating temperature is 400 ° -800 ° C, cannot exceed 1000 ° C, otherwise it will promote the catalyst for prematurely aging and shorten life.
4. The engine channeling oil to reduce the catalyst activity.