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Fuel Reforming and Catalyst Deactivation Investigated in Real Exhaust Environment
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 2, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
Increased in-cylinder hydrogen levels have been shown to improve burn durations, combustion stability, HC emissions and knock resistance which can directly translate into enhanced engine efficiency. External fuel reformation can also be used to increase the hydrogen yield. During the High-Efficiency, Dilute Gasoline Engine (HEDGE) consortium at Southwest Research Institute (SwRI), the potential of increased hydrogen production in a dedicated-exhaust gas recirculation (D-EGR) engine was evaluated exploiting the water gas shift (WGS) and steam reformation (SR) reactions. It was found that neither approach could produce sustained hydrogen enrichment in a real exhaust environment, even while utilizing a lean-rich switching regeneration strategy. Platinum group metal (PGM) and Ni WGS catalysts were tested with a focus on hydrogen production and catalyst durability. Although 4% additional hydrogen was initially produced in the EGR stream, leading to improvements in the coefficient of variation (CoV) and brake specific fuel consumption (BSFC), catalyst activity decreased within a few hours regardless of the regeneration strategy employed. With an SR catalyst, a small amount of hydrogen was produced in the EGR stream via the WGS reaction but not the SR reaction. Similar to the WGS catalyst testing, the SR catalyst deactivated quickly due to coking. While neither of these approaches displayed acceptable long-term performance, the exhaust environment still poses a significant opportunity for the production of hydrogen rich reformate to deliver improvement in engine efficiency.
CitationBartley, G., Gukelberger, R., Henderson, R., and Henry, C., "Fuel Reforming and Catalyst Deactivation Investigated in Real Exhaust Environment," SAE Technical Paper 2019-01-0315, 2019, https://doi.org/10.4271/2019-01-0315.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
- Alger, T., Gingrich, J., and Mangold, B., “The Effect of Hydrogen Enrichment on EGR Tolerance in Spark Ignited Engines,” SAE Technical Paper 2007-01-0475, 2007, doi:10.4271/2007-01-0475.
- Gukelberger, R., Gingrich, J., Alger, T., and Almaraz, S., “Potential and Challenges for a Water-Gas-Shift Catalyst as a Combustion Promoter on a D-EGR® Engine,” SAE Int. J. Engines 8(2):583-595, 2015.
- Nagano, S., Yamamoto, S., Asano, T., Ohsawa, K. et al., “Plate Type Methanol Steam Reformer Using New Catalytic Combustion for a Fuel Cell,” SAE Technical Paper 2002-01-0406, 2002, doi:10.4271/2002-01-0406.
- Wagner, A., Wagner, J., Krause, T., and Carter, J., “Autothermal Reforming Catalyst Development for Fuel Cell Applications,” SAE Technical Paper 2002-01-1884, 2002, doi:10.4271/2002-01-1884.
- Leung, P., Tsolakis, A., Wyszynski, M., Rodríguez-Fernández, J. et al., “Performance, Emissions and Exhaust-Gas Reforming of an Emulsified Fuel: A Comparative Study with Conventional Diesel Fuel,” SAE Technical Paper 2009-01-1809, 2009, doi:10.4271/2009-01-1809.
- Tartakovsky, L., Baibikov, V., Gutman, M., Mosyak, A. et al., “Performance Analysis of SI Engine Fueled by Ethanol Steam Reforming Products,” SAE Technical Paper 2011-01-1992, 2011, doi:10.4271/2011-01-1992.
- Shimada, A. and Ishikawa, T., “Improved Thermal Efficiency Using Hydrous Ethanol Reforming in SI Engines,” SAE Technical Paper 2013-24-0118, 2013, doi:10.4271/2013-24-0118.
- Rostrup-Nielsen, J.R. and Tottrup, J.R., Paper 39, in Symposium on Science of Catalysis and Its Applications in Industry, Sindi, India, Feb. 22-24, 1979.
- Ashida, K., Maeda, H., Araki, T., Hoshino, M. et al., “Study of an On-Board Fuel Reformer and Hydrogen-Added EGR Combustion in a Gasoline Engine,” SAE Int. J. Fuels Lubr. 8(2):358-366, 2015.
- Liu, C.J., Jingyun, Y., Jiang, J., and Pan, Y., “Progresses in the Preparation of Coke Resistant Ni-based Catalyst for Steam and CO2 Reforming of Methane,” ChemCatChem 3(3):529-541, 2011.
- Guo, J., Lou, H., and Zheng, X., “The Deposition of Coke from Methane on a Ni/MgAl2O4 Catalyst,” Carbon 45:1314-1321, 2007.
- Katia, B., Sørensen, S., Bordiga, S., Skibsted, J. et al., “Role of Internal Coke for Deactivation of ZSM-5 Catalysts after Low Temperature Removal of Coke with NO2,” Catal. Sci. Technol. 2(6):1196, 2012.
- Trimm, D.L., “Coke Formation and Minimisation during Steam Reforming Reactions,” Catal. Today. 37(3):233-238, 1997.
- Han, Z., Wang, J., Yan, H., Shen, M. et al., “Performance of Dynamic Oxygen Storage Capacity, Water-Gas Shift and Steam Reforming Reactions over Pd-Only Three-Way Catalysts,” Catal. Today. 158(3-4):481-489, 2010.
- Borowiecki, T., Goleboiwski, A., and Stansinska, B., “Effects of Small MoO3 Additions on the Properties of Nickel Catalysts for the Steam Reforming of Hydrocarbons,” Appl. Catal., A. 153(1-2):141-156, 1997.
- Ashida, K., Hoshino, M., Maeda, H., Araki, T. et al., “Study of Reformate Hydrogen-Added Combustion in a Gasoline Engine,” SAE Technical Paper 2015-01-1952, 2015, doi:10.4271/2015-01-1952.
- Hoshino, M., Izumi, T., Akama, H., Zaima, M. et al., “Development of an On-Board Fuel Reforming Catalyst for a Gasoline Engine,” SAE Technical Paper 2015-01-1955, 2015, doi:10.4271/2015-01-1955.
- Argyle, M. and Bartholomew, C., “Heterogeneous Catalyst Deactivation and Regeneration: A Review,” Catalysts. 5(1):145-269, 2015.
- Somorjai, G., “On the Mechanism of Sulfur Poisoning of Platinum Catalysts,” J. Catal. 27(3):453-456, 1972.