December 31, 2012
Book Chapter

Deactivation Mechanisms of Base Metal/Zeolite Urea Selective Catalytic Reduction Materials, and Development of Zeolite-Based Hydrocarbon Adsorber Materials

Abstract

In this collaborative program, scientists and engineers in the Institute for Integrated Catalysis at Pacific Northwest National Laboratory and at Ford Motor Company have investigated laboratory- and engine-aged SCR catalysts, containing mainly base metal zeolites. These studies are leading to a better understanding of various aging factors that impact the long-term performance of SCR catalysts and improve the correlation between laboratory and engine aging, saving experimental time and cost. We have also studied materials effective for the temporary storage of HC species during the cold-start period. In particular, we have examined the adsorption and desorption of various HC species produced during the combustion with different fuels (e.g., gasoline, E85, diesel) over potential HC adsorber materials, and measured the kinetic parameters to update Ford’s HC adsorption model. Since this CRADA has now been completed, in this annual report we will provide very brief summaries of most of the work carried out on this CRADA over the last several years.

Revised: September 10, 2013 | Published: December 31, 2012

Citation

Gao F., J. Kwak, J.H. Lee, D.N. Tran, C.H. Peden, K. Howden, and Y. Cheng, et al. 2012. Deactivation Mechanisms of Base Metal/Zeolite Urea Selective Catalytic Reduction Materials, and Development of Zeolite-Based Hydrocarbon Adsorber Materials. In Advanced Combustion Engine Research and Development 2012 Annual Progress Report, edited by G Singh. III-40 - III-44. Washington Dc:U.S. Department of Energy. PNNL-22066.