Method of preparation of a monilithic catalyst for selective catalytic reduction of nitrogen oxides
AssigneeUmicore AG & Co. KG
InventorsJakob Weiland Høj, Peter Østergaard Vistisen
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Abstract
Method of preparing monolithic SCR catalyst with a plurality of gas flow channels comprising the steps of (a) providing a monolithic shaped substrate with a plurality of parallel gas flow channels; (b) coating the substrate with a wash coat slurry comprising vanadium oxide precursor compounds and titania and optionally tungsten oxide precursor compounds; and (c) drying the thus coated substrate with a drying rate of 5 mm/min or less along flow direction through the gas flow channels; and (d) activating the dried coated substrate by calcining.
Claims19
Method of preparing monolithic SCR catalyst with a plurality of gas flow channels comprising the steps of
- (a) providing a monolithic shaped substrate with a plurality of parallel gas flow channels;
- (b) coating the substrate with a wash coat slurry comprising vanadium oxide precursor compounds and titania;
- and
- (c) drying the thus coated substrate with a drying rate of 5 mm/min or less along flow direction through the gas flow channels;
- and
- (d) activating the dried coated substrate by calcining.
Dependencies are inferred from the claim text.