Browse Publications Technical Papers 2009-01-1398
2009-04-20

Development of High Performance Three-Way-Catalyst Technology to Lower NOx Emission 2009-01-1398

One primary result of the reduction of platinum group metals (PGM) within a catalytic converter is the decline in NOx conversion efficiency. This paper hypothesizes that the primary factor of this decline to be hydrocarbon (HC) poisoning. To maintain high NOx conversion efficiency as the PGM reduces, Rh activation improvement becomes significant to overcome the HC poisoning. Analysis of the Rh deterioration mechanism found that it is effective to separately arrange Rh and CeO2 on the converter, avoiding the Rh deactivation. By this improvement, we improved the catalyst activity at less than 25% of the original Rh loading.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Preview Document Add to Cart
Members save up to 17% off list price.
Login to see discount.
Special Offer: Download multiple Technical Papers each year? TechSelect is a cost-effective subscription option to select and download 12-100 full-text Technical Papers per year. Find more information here.
We also recommend:
TECHNICAL PAPER

Development and Application of New Low Rhodium Three-Way Catalyst Technology

2007-26-016

View Details

TECHNICAL PAPER

By-Pass Hydrocarbon Absorber System for ULEV

960343

View Details

TECHNICAL PAPER

Oxidation Stability of Some Phosphorus - Free Fully Formulated Crankcase Oils

982581

View Details

X