Portal de Periódicos da CAPES

Modeling of SCR DeNOx Catalyst - Looking at the Impact of Substrate Attributes

2003; Linguagem: Inglês

10.4271/2003-01-0845

2688-3627

Christian Winkler, Peter Flörchinger, M. D. Patil, J. Gieshoff, Paul Spurk, Marcus Pfeifer,

Catalysis and Hydrodesulfurization Studies

The present work intends to examine the selective NOx reduction efficiency of a current commercial Titanium-Vanadium washcoated catalyst and to develop a transient numerical model capable of describing the SCR process while using a wide range of inlet conditions such as space velocity, oxygen concentrations, water concentration and NO 2 /NO ratio. The concentrations of different components (NO, NO 2 , N 2 O, NH 3 , H 2 O and HNO 3 ) were analyzed continuously by a FT-IR spectrometer. A temperature range from 150°C up to 650°C was examined and tests were carried out using a model exhaust gas comparable to the real diesel exhaust gas composition. There is a very good correlation between experimental and calculated results with the given chemical kinetics.