Technical Paper
Catalyst Aging Evaluation with Exposure to 0.06 and 0.11 Percent Phosphorus Oils Using the FOCAS® Burner System
2003-05-19
2003-01-1999
This study was performed by the Department of Emissions Research at Southwest Research Institute (SwRI®) in response to a request from the ASTM OPEST II (Oil Protection of Emissions Systems Test) Task Force. The objective of the study was to develop and demonstrate a preliminary catalyst oil-poisoning aging and screening procedure to evaluate and differentiate the effect of oils with varying levels of phosphorus on catalyst performance. The ultimate objective was to begin the groundwork for creating a procedure that could demonstrate the impact of engine oil formulations on catalyst performance. The oils used in this program were fully formulated oils referred to as ‘OilA’ and ‘OilB.’ OilA contained 0.11 and OilB contained 0.06 weight percent phosphorus, with both containing the same levels of ash-forming compounds. The procedure developed used a gasoline-fueled burner with an isolated oil injection subsystem.
