| 摘要 |
PURPOSE: Provided is a catalytic converter containing Pt, Pd, and Rd for purifying automobile flue gas, which has improved thermal resistance, durability, and has competitiveness in cost. CONSTITUTION: The catalytic converter is manufactured by impregnating Al2O3 with Pt, Rh, Pd at the ratio of 0.5-3:12-15:0.5-3; blending and milling; adding Ce-Zr oxides to prepare washcoat slurry (solid content: 30-50%) having rare earth metal content of up to 10g/L; washcoating the slurry on the surface of a honeycomb monolith: drying the honeycomb monolith in the temperature range of 100 to 150deg.C; and then sintering it in the temperature range of 400 to 600deg.C.
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