| abstract |
A catalytic converter for cleaning exhaust gas includes a heat-resistant support, and a coating formed on the support. The coating contains at least one kind of catalytically active substance and at least one kind of oxygen-storing oxide. The oxygen-storing oxide is selected from oxides of Pr and Tb. The oxygen-storing oxide may be Pr6O11 or Tb4O7. Alternatively, the oxygen-storing oxide may be a complex oxide which may be represented by the formula,where "R" represents Pr or Tb, "E" represents an element selected from a group consisting of Nd, Y and Gd. |