Catalyst component for exhaust gas purification, a process for the production thereof and a process for the production of an exhaust gas purification catalyst component

摘要

The active temperature of an exhaust gas purification catalyst is shifted to the higher temperature range if Al2O3 and/or CeO2 are used as co-catalyst and/or if the oxidation number of Pt or Ir, which are used as active noble metal components, is +4.