BASIC EXCHANGE TO IMPROVE OXIDATION AND REDUCING MATERIALS FOR OXYGEN STORAGE IN METHODS OF APPLICATION, INCLUDING CONTROL OF CONTAMINATING EMISSIONS

摘要

1. A method of producing catalytic materials containing highly dispersed metal atoms or metal ions selected from the group consisting of a transition metal, an alkali metal, an alkaline earth metal and a metal of group IIIb based on contacting a support material based on a metal oxide that contains cerium oxide with a solution a precursor containing dissolved cations under conditions of high pH / low content of hydroxonium ion (H3O +) / low content of proton (H +), and high pH means pH, composition from about 8.0 to about 9.5, after which the ion-exchanged / promoted cerium oxide is dried and calcined to remove all solvent and convert cations to highly dispersed metal or metal oxide ensembles,! 2. The method according to claim 1, in which the applied cation solution contains an ammonium complex of metal cations. ! 3. The method according to claim 1, in which the cation solution contains an organic amine complex of metal cations. ! 4. The method according to claim 1, in which the solution of cations contains a hydroxide compound of metal cations. ! 5. The method according to one or more of the preceding paragraphs, in which the material is calcined at temperatures exceeding 350 ° C, in order to transfer the metal precursor to the final state of the dispersed metal / metal oxide. ! 6. The method according to one or more of the preceding claims 1 to 4, in which the concentration of metal particles introduced in this way is from about 0.01 to about 10 wt.%. ! 7. The method according to claim 1, in which the cerium oxide is a solid solution of cerium oxide and zirconium oxide (oxide C