Catalysts based on X-zeolite have been developed by exchanging its ion with Copper ions and its effectiveness in reducing in an actual SI engine exhaust has been tested. Unlike noble metals, the doped X-zeolite catalysts, studied here, exhibit significant reduction for a wide λ range and exhibit a slow rate of decrease with increase in λ ratio. Back pressure developed across the catalyst bed was found to be well-affordable and power loss due to back pressure is only minimal. During 30 hours of testing of the catalyst, no significant deactivation was observed. Additionally a mathematical model has been developed to predict the performance of the catalyst and to validate that against experimental results. Results predicted by the mathematical model agree well with the experimental results and absolute average deviation of experimental conversion efficiency is found to be less than 5 percent of the predicted value. [S0742-4795(00)01601-X]
Emission Control Through Cu-Exchanged X-Zeolite Catalysts: Experimental Studies and Theoretical Modeling
Contributed by the Internal Combustion Engine Division (ICE) of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for publication in the ASME JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received by the ICE February 18, 1997; final revision received by the ASME Headquarters October 7, 1999. Associate Technical Editor: D. Assanis.
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Bhattacharyya, S., and Das, R. K. (October 7, 1999). "Emission Control Through Cu-Exchanged X-Zeolite Catalysts: Experimental Studies and Theoretical Modeling ." ASME. J. Eng. Gas Turbines Power. January 2000; 122(1): 106–111. https://doi.org/10.1115/1.483190
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