Motor vehicle exhaust catalytic converter, and its preparing method
A technology for catalytic converters and motor vehicles, used in exhaust devices, mechanical equipment, machines/engines, etc., can solve the problems of reduced catalytic activity, high cost, unsuitable coating, etc., to improve the purification effect and prolong the service life , combined with a strong effect
Inactive Publication Date: 2007-01-10
韩昭
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The invention discloses a motor vehicle exhaust catalytic converter, where the catalyst carrier is a metal cellular carrier using hot dip aluminized thin steel plate as precursor and made by micro-arc oxidized ceramic film process; the carried catalyst coating is a noble metal-rare earth combined catalyst coating formed on the carrier by making YSZ and Pd into mixed pulp and coating it on the carrier. And the invention also discloses a method for preparing the motor vehicle exhaust catalytic converter, making hot dip plating aluminum by salt bath process and in situ growing the ceramic film on the surface of the hot dip aluminized thin steel plate by micro-arc oxidizing process, where the ceramic film has a structure of crystalline oxide ceramic phase, compact and even, firm to bond, and having low making energy consumption, and outstanding advantages of improving purifying effect and prolonging the service life. And it is applied to exhaust purification for various motor vehicles using leadless gasoline.
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Property | Measurement | Unit |
Current density | 0.01 ~ 0.1 | A/cm² |
Thickness | 10.0 ~ 30.0 | µm |
tensile | MPa | |
Particle size | Pa | |
strength | 10 |
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