Preparation of catalyst for the treatment of combustible waste products

Claim 1

IN THE PREPARATION OF A PARTICLE-FORM CATALYTIC COMPOSITE INCLUDING THE STEP OF IMPREGNATING AN INORGANIC OXIDE CARRIER PARTICLE WITH A GROUP VIII METAL COMPONENT, THE IMPROVEMENT IN THE METHOD OF EFFECTING SAID IMPREGNATION SO THAT SAID METAL COMPONENT IS DISPOSED ESSENTIALLY AS A CONTINUOUS LAYER INTERPOSED BETWEEN THE CENTER AND THE SURFACE OF SAID PARTICLE WHICH COMPRISES USING WITH SAID METAL COMPONENT FROM ABOUT 0.1% TO ABOUT 1.5% BY WEIGHT, BASED UPON THE WEIGHT OF SAID CARRIER, OF AN ORGANIC ACID IN SOLUTION SELECTED FROM THE GROUP CONSISTING OF DIBASIC ACIDS AND DERIVATIVES THEREOF HAVING THE FOLLOWING STRUCTURAL FORMULA

Claim 3

A METHOD OF PREPARING A PARTICLE-FORM CATALYST COMPOSITE OF ALUMINA AND A PLATINUM COMPONENT WHICH COMPRISES IMPREGNATING AN ALUMINA PARTICLE, IN THE ABSENCE OF ALKALINE REAGENT, WITH A PLATINUM COMPOUND AND FROM ABOUT 0.13% TO ABOUT 0.70% BY WEIGHT, BASED UPON THE WEIGHT OF SAID ALUMINA, OF AN ORGANIC ACID IN SOLUTION SELECTED FROM THE GROUP CONSISTING OF DIBASIC ACIDS AND DERIVATIVES THEREOF HAVING THE FOLLOWING STRUCTURAL FORMULA: HOOC-(C(-R)(-R''))A-COOH WHERE: R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HYDROXYL AND ALKYL GROUPS; R'' IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL AND CARBOXYL GROUPS; AND N IS WITHIN THE RANGE OF 0 TO 6; DRYING THE RESULTING IMPREGNATED PARTICLE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 100*F. TO ABOUT 250*F., AND THEREAFTER SUBJECTING THE PARTICLE TO AN ATMOSPHERE OF HYDROGEN AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 900*F. TO ABOUT 1800*F. TO YIELD A PLATINUM-CONTAINING PARTICLE IN WHICH SAID PLATINUM COMPONENT IS DISPOSED ESSENTIALLY AS A CONTINUOUS LAYER INTERPOSED BETWEEN THE CENTER AND THE SURFACE OF SAID PARTICLE.

Claim 4

A METHOD OF PREPARING A PARTICLE-FORM CATALYST COMPOSITE OF ALUMINA AND A PLATINUM COMPONENT WHICH COMPRISES IMPREGNATING AN ALUMINA PARTICLE, IN THE ABSENCE OF ALKALINE REAGENT, WITH A PLATINUM COMPOUND AND FROM ABOUT 0.13% TO ABOUT 0.70% BY WEIGHT, BASED UPON THE WEIGHT OF SAID ALUMINA, OF AN ORGANIC ACID IN SOLUTION SELECTED FROM THE GROUP CONSISTING OF DIBASIC ACIDS AND DERIVATIVES THEREOF HAVING THE FOLLOWING STRUCTURAL FORMULA: HOOC-(C(-R)(-R''))A-COOH WHERE: R IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, HYDROXYL AND ALKYL GROUPS; R'' IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL AND CARBOXYL GROUPS; AND N IS WITHIN THE RANGE OF 0 TO 6; DRYING THE RESULTING IMPREGNATED PARTICLE AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 100*F. TO ABOUT 250*F., AND THEREAFTER SUBJECTING THE PARTICLE TO AN ATMOSPHERE OF HYDROGEN AT A TEMPERATURE WITHIN THE RANGE OF FROM ABOUT 900*F. TO ABOUT 1800*F. TO YIELD A PLATINUM-CONTAINING PARTICLE IN WHICH SAID PLATINUM COMPONENT IS DISPOSED ESSENTIALLY AS A CONTINUOUS LAYER INTERPOSED BETWEEN THE CENTER AND THE SURFACE OF SAID PARTICLE.