Characterization of phosphorus poisoning on diesel exhaust gas catalyst components containing oxide and Pt.

Kröger, V.; Kanerva, T.; Lassi, U.; Rahkamaa-Tolonen, K.; Vippola, M.; Keiski, R.

Effects of phosphorus poisoning on the characteristics of powdered exhaust gas catalyst components containing different oxides and platinum were studied. The amount of phosphorus accumulated in the sample during the laboratory-scale ageing procedure varied for the samples with different composition. The phosphorus ageing affected substantially the characteristics of the samples, which could be detected as a decrease in the specific surface area and pore volume and an increase in the average pore size. Large platinum particles and an increase in the washcoat grain-size were observed after the ageings.

DIESEL motor exhaust gas; DIESEL automobile emissions; CATALYST poisoning; PHOSPHORUS; PLATINUM; PARTICLES

Topics in Catalysis, 2007, Vol 45, Issue 1-4, p153

1022-5528

Academic Journal

10.1007/s11244-007-0257-0