| abstract |
SUMMARY OF THE INVENTION The present invention comprises a method comprising the step of contacting iron and zirconium salts with a solution of iron and zirconium salts, optionally comprising iron and optionally some other metal, and (a) optionally in the presence of a binder and a lubricant. And (b) forming a molded article from the paste of step (a), (c) drying the shaped particles of step (b), and (d) drying the formed particles of step (c). The shaped particles are roasted at a temperature of at least 400 ° C. and (e) optionally at least one metal compound selected from the group consisting of cobalt, nickel, rhodium, palladium, iridium, platinum, manganese, lanthanum and cerium are added to the shaped particle of step (a) or roasted step (d), the supported catalyst prepared by the process comprising contacting the nitrous oxide (N 2 O), N 2 Conversion of O to nitrogen and oxygen , And to the catalysts used in the method. |