SAUERSTOFF SPEICHERNDES MATERIAL AUF DER BASIS VON CEROXID, VERFAHREN ZU SEINER HERSTELLUNG UND VERWENDUNG IN DER ABGASREINIGUNG VON VERBRENNUNGSMOTOREN

摘要

Production of oxygen-storing material based on cerium oxide with a further oxide of silicon or zirconium comprises initially forming hydroxide precursors of the mixed oxide using a wet chemical method; drying the precursors at 80-300 degrees C forming an oxide/hydroxide/carbonate mixture; and treating the dried mixture in an atmosphere containing hydrogen at 600-900 degrees C for 1-10 hours.