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Mn-Ce/ γ- Effect of Al2O3 on Pt CE Ba/ γ- Simulation study on the influence of NOx storage and reduction on Al2O3 Catalyst

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Document pages: 6 pages

Abstract: A series of Pt-Ce-Ba were synthesized by sol-gel method. γ- Al2O3 and Mn CE γ- Al2O3 catalyst, and the samples were characterized by XRD, SEM and EDS. Mn CE was studied in a fixed bed reactor simulating gases no, O2 and N2 γ- Effect of Al2O3 on Pt CE Ba γ- Effect of NOx storage and reduction on Al2O3 catalyst. The results show that the oxidation degree of no to NO2 decreases with the increase of inlet no concentration. When the NO concentration is 500, the no oxidation rate reaches 83   ppm, but decreases to 76   ppm with the increase of no concentration to 1000. And Pt CE Ba γ- Compared with Al2O3 catalyst, Pt CE Ba γ- Al2O3 composite Mn CE γ- The NOx storage and reduction rate of Al2O3 catalyst are significantly improved. However, for PT CE Ba γ- Reductant for NOx reduction reaction on al23 catalysts was consumed under the treatment of Mn-Ce γ-Al2O3 catalyst, which caused the NOx conversion to obviously drop, but the rate of NOx absorption declined slightly.

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