Co,Ba,K/ZrO2 supported on either cordierite monoliths or Al2O3 foams for diesel exhausts abatement

E.D. BANÚS; E.E. MIRÓ; M.A. ULLA; V.G. MILT

Seoul, Korea

Congreso; 14th ICC (International Congress on Catalysis); 2008

The present work is related to the Co,Ba,K/ZrO2 catalyst deposition onto Al2O3 foams and cordierite monoliths to be tested for soot combustion. The ZrO2 coating was added by washcoating whereas Ba, Co, and K were added by impregnation. The soot particles were incorporated using soot suspensions in water or n-hexane as solvents. When soot was added to the Co,Ba,K/ZrO2 /foam catalyst using a 600 ppm soot supension in n-hexane, the maximum combustion rate temperature in the presence of 0.1% NO was 370 ±10°C. No significant differences in activity were found when the soot was incorporated to the Co,Ba,K/ZrO2/monolith catalyst.