Process for producing a catalyst and catalyst as such
AssigneeJohnson Matthey Public Limited Company
InventorsJuergen Bauer, Ralf Dotzel, Joerg Werner Muench
Life of this patent
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AssigneeJohnson Matthey Public Limited Company
InventorsJuergen Bauer, Ralf Dotzel, Joerg Werner Muench
Estimating the term…
To be able to produce an SCR catalyst (2), in particular one having a zeolite fraction (Z) as catalytically active fraction, in a reliable process and at the same time achieve good catalytic activity of the catalyst (2), an inorganic binder fraction (B) which is catalytically inactive in the starting state and has been treated to develop catalytic activity is mixed into a catalyst composition (4). The inorganic binder component for the binder fraction (B) is, in the starting state, preferably porous particles (10), in particular diatomaceous earth, which display mesoporosity. To effect catalytic activation, the individual particles (10) are either coated with a catalytically active layer (12) or transformed into a catalytically active zeolite (14) with maintenance of the mesoporosity.
A catalyst produced by a process for producing an extruded catalyst, wherein a catalyst composition is extruded to produce a catalyst body, where, to set desired rheological properties of the catalyst composition, the catalyst composition comprises an inorganic binder fraction which is catalytically inactive in the starting state and is composed of at least one inorganic binder component consisting of individual particles which have been treated to develop catalytic activity, wherein the individual particles comprise:
Dependencies are inferred from the claim text.