Diesel oxidation catalyst with good low-temperature activity

摘要

The invention relates to a method for producing a catalyst, wherein the catalyst has a high activity and selectivity with regard to the oxidation of CO and NO. The invention also relates to the catalyst produced using the method according to the invention, the use of the catalyst as oxidation catalyst as well as a catalyst component which contains the catalyst according to the invention. Finally, the invention is directed towards an exhaust-gas cleaning system which comprises the catalyst component containing the catalyst according to the invention.

主权项

1. A method for producing a catalyst, comprising the steps of:
a) impregnating a metal oxide support material with a platinum compound, b) drying the impregnated metal oxide support material at a temperature in the range from 60° C. to 100° C. which is below the decomposition point of the platinum compound to obtain a dried impregnated metal oxide support, c) calcining the dried impregnated metal oxide support material obtained in step b) in a gas stream which consists of NO and inert gas, wherein the calcining takes place at a temperature of from 400 to 650° C.