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name:AX - 2 ternary catalyst Explanation: a TWCs meeting NationalⅢ emission standard TWCs are prepared by special coating technic that makes the complex of perovskite with high stability,rare earth oxygen storage materials and a little noble metal ( Pt, Pd, Rh ) supported on honeycomb ceramics. It has the advantages of high catalytic activity and thermal stability and long service life. It can effectively eliminate noxiousgasof CO, HC and NOx, and its catalytic performance meets NationalⅢ emission standard. b TWCs meeting NationalⅣ emission standard Basd on the catalysts meeting NationalⅢ emission standard, the TWCs meeting NationalⅣ emission standard has higher catalytic activity at low temperature, thermal stabiblity, wide application range of space velocityand has better resistance to the deactivation due to steam and sulfur poisoning. It can effectively deal with the deactivation of catalysts resulted from the fluctuation of air-fuel ratio, and its catalytic performance meets National Ⅳ emission standard. Physical parameters of catalysts: It can be customized according to customers’ requirements. |
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