Mild Catalytic DPF Regeneration and Related CO Emissions in Commercial Vehicles

G. Villata; A. Tarabocchia; V. Bozzolini; J. Caroca; N. Russo; D. Fino; G. Saracco; V. Specchia

doi:10.4271/2008-01-2643

2008-10-07

Mild Catalytic DPF Regeneration and Related CO Emissions in Commercial Vehicles 2008-01-2643

La_1-xA_xNi_1-yB_yO₃ nanostructured perovskite-type oxides catalysts (where A = Na, K, Rb and B = Cu; x = 0, 0.2 and y = 0, 0.05, 0.1), also supporting 2% in weight of gold, were prepared via the so-called “Solution Combustion Synthesis (SCS)” method, and characterized by means of XRD, BET, FESEM-EDS and TEM analyses. The performance of these catalysts towards the simultaneous oxidation of soot and CO was evaluated. The 2 wt.% Au-La_0.8K_0.2Ni_0.9Cu_0.1O₃ showed the best performance with a peak carbon combustion temperature of 367 °C and the half conversion of CO reached at 141 °C. The same nanostructured catalyst, deposited by in situ SCS directly over a SiC filter and tested on real diesel exhaust gases, fully confirmed the encouraging results obtained on the powder catalyst.

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Mild Catalytic DPF Regeneration and Related CO Emissions in Commercial Vehicles 2008-01-2643

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