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AssigneeUmicore AG & Co. KG
InventorsJurgen Gieshoff, Hartmut Finkbeiner, Egbert Lox, Thomas Kreuzer
Estimating the term…
The invention relates to a method of determining activity and aging behavior of a catalyst. For this purpose, two independent substreams of combustion offgases are produced and mixed before coming into contact with the catalyst. The first substream of combustion offgases is preferably produced by burning a motor fuel and forms the major part of the combustion offgases. The second substream of combustion offgases is produced by means of a gas burner whose air ratio can be adjusted within a wide range. Mixing of this second substream of combustion offgases into the first substream enables the composition of the total stream to be set in a defined manner.
A method of determining activity and aging behavior of a catalyst by producing a first substream and a second substream of combustion offgases by two independent combustion processes and a stream of hot combustion offgases having a defined pollutant composition by mixing the first substream of hot combustion offgases with the second substream of hot combustion offgases, passing the combustion offgases over the catalyst to be tested and determining the pollutant conversions effected by the catalyst.
An apparatus (10) for determining the activity and the aging behavior of a catalyst (20), which comprises a first burner (30) having an offgas line (40) in which the catalyst is located, wherein the apparatus further comprises a second burner (50) having an offgas line (60) which opens into the offgas line (40) of the first burner (30) upstream of the catalyst (20).
Dependencies are inferred from the claim text.