Title

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

Authors

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

Abstract

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.

Subjects

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

Publication

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

ISSN

1022-5528

Publication type

Academic Journal

DOI

10.1007/s11244-007-0257-0