Performance of potassium-promoted catalysts for NO x and soot removal from simulated diesel exhaust |
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Authors: | Nejar N. Illán-Gómez M. J. |
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Affiliation: | (1) Department of Inorganic Chemistry, University of Alicante, P.O. Box. 99, Alicante, 03080, Spain |
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Abstract: | In order to elucidate the effect of support in the catalytic performance, two selected potassium-promoted catalysts (K1Cu/beta and KCu2/Al2O3) were tested for the simultaneous NO x /soot removal from a simulated diesel exhaust. For comparative purpose, the behaviour of a platinum catalyst (Pt/beta) was also studied. Isothermal experiments revealed that the potassium-promoted catalysts show a high activity for NO x /soot removal in the 350–450 °C temperature range. In addition, the catalysts present the advantage that the main reaction products are N2 and CO2. Among the catalysts tested, KCu2/Al2O3 presents the best global performance at 450 °C: the highest soot consumption rate, even higher than the platinum catalysts, and a high NO x reduction. |
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Keywords: | diesel soot NO x C3H6 bimetallic Pt K Cu beta alumina |
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