Research on deNOx-SCR over Pd/TiO2/Al2O3 under Simulated Post Euro-IV Diesel Exhaust Conditions

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The performance of Pd/TiO2/Al2O3 catalyst for the NOx reduction in the CO-rich conditions of simulated post Euro-IV diesel emissions at low temperature was investigated in this paper. The addition of a small amount of H2 resulted in a visible synergetic effect. And the total amount of mixed reductant also improved the NOx convertion. The catalyst showed NOx conversions exceed 40% at 100~250°C when the reductant amount is 8,000 ppm with the H2/CO ratio of 1:3, where water vapor is absence. Even though water vapor had a negative influence, 25~33% of NOx can be decomposed using this catalyst, which is meaningful considering that it is used in a passive system.

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Advanced Materials Research (Volumes 1073-1076)

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52-55

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December 2014

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© 2015 Trans Tech Publications Ltd. All Rights Reserved

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