Lean-DeNO(x) titania based monolithic catalysts

Research output: Contribution to journalArticle

Abstract

The activity of titania based copper and platinum monolithic catalysts in the reduction of nitrogen oxides was studied with exhaust gases from a Diesel engine injecting fuel as reductant. Combining both catalysts, a two-stage system was designed, studying the influence of the copper catalysts composition on its performance with synthetic gas mixtures. The influence of reactants concentration and operating conditions was also investigated. Taking into account these results, a double-bed system with a cell density of 33 cell cm(-2) (210 c.p.s.i.) was prepared. Linear velocity had a strong influence on the performance of the Pt catalyst and of the double-bed. Two NOx conversion maxima were observed with Pt/TiO2 at 225 degrees C and 350 degrees C operating at 6.6 m s(-1). Promising NOx conversions were achieved in the temperature range 200-450 degrees C. (C) 1998 Elsevier Science B.V. All rights reserved.

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Subject classification (UKÄ) – MANDATORY

  • Chemical Engineering

Keywords

  • NOx reduction, monolith, hydrocarbon, diesel, platinum, copper oxide
Original languageEnglish
Pages (from-to)103-108
JournalCatalysis Today
Volume45
Issue number1-4
Publication statusPublished - 1998
Publication categoryResearch
Peer-reviewedYes