Ceria-catalyzed soot oxidation studied by environmental transmission electron microscopy
by S.B. Simonsen, S. Dahl, E. Johnson and S. Helveg, Haldor Topsoe
Journal of Catalysis 255 (2008) 1
SAE paper 2001-01-0517 (pdf, 1 MB)
Combined Silencers and Urea-SCR Systems for Heavy-duty Diesel Vehicles for OEM and Retrofit Markets
by Pär Gabrielsson, Ioannis Gekas and Peter Schoubye, Topsoe, and Søren Æ. Mikkelsen and Svend Frederiksen, Silentor A/S
SAE paper 2002-01-2885 (pdf, 421 KB)
Performance of a Urea SCR system combined with a PM and fuel optimized heavy-duty diesel engine able to achieve the Euro V emission limits
by Ioannis Gekas, Pär Gabrielsson and Keld Johansen,Ingvard Bjørn and Jens Husted Kjær, Topsoe, and Walter Reczek, Wolfgang Cartellieri, AVL LIST GMBH
SAE paper 2002-01-0289 (pdf, 390 KB)
Urea-SCR Catalyst System Selection for Fuel and PM Optimized Engines and a Demonstration of a Novel Urea Injection System
by Ioannis Gekas, Pär Gabrielsson and Keld Johansen, Topsoe, Lars Nyengaard, Grundfos Management A/S, Thomas Lund, Dansk Teknologi A/S
SAE paper 2007-01-1921 (pdf, KB)
Novel base metal-palladium catalytic diesel filter coating with NO
2 reducing properties
by Keld Johansen, Søren Dahl, Gurli Mogensen, Søren Pehrson, Topsoe and Jesper Schramm, Anders Ivarsson, Technical University of Denmark
Trial of a new emissions control system for buses in London (pdf, 334 KB)