Lifetime impact of SO2-poisoning of a Cu-CHA catalyst for NH3-SCR

Peter S. Hammershøi, Ton V.W. Janssens, Anker D. Jensen

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Abstract

The highest activity for removal of NOx (NO and NO2) in the temperature range 180-250 °C, by selective catalytic reduction (SCR) with NH3 in the after treatment system of heavy-duty vehicles, is obtained with Cu-zeolite catalysts. Improved fuel efficiency that is necessary for lower CO2 emissions, has led to colder exhausts, which has increased the importance of efficient NOx removal in that temperature range. However, Cu-zeolites deactivate by the inevitable presence of SO2 in diesel exhaust, and therefore, we have investigated if the lifetime impact of SO2 on the activityof a Cu-CHA zeolitecatalyst is prohibitivefor practicalapplication.

Original languageEnglish
Publication date2018
Number of pages2
Publication statusPublished - 2018
EventThe 10th International Conference on Environmental Catalysis, The 3rd International Symposium on Catalytic Science and Technology in Sustainable Energy and Environment - Tianjin, China
Duration: 21 Sep 201826 Sep 2018
http://icec-eecat2018.ydlilab.com/dct/page/1

Conference

ConferenceThe 10th International Conference on Environmental Catalysis, The 3rd International Symposium on Catalytic Science and Technology in Sustainable Energy and Environment
CountryChina
CityTianjin
Period21/09/201826/09/2018
Internet address

Cite this

Hammershøi, P. S., Janssens, T. V. W., & Jensen, A. D. (2018). Lifetime impact of SO2-poisoning of a Cu-CHA catalyst for NH3-SCR. Poster session presented at The 10th International Conference on Environmental Catalysis, The 3rd International Symposium on Catalytic Science and Technology in Sustainable Energy and Environment, Tianjin, China.