Process for the manufacture of hydrogen peroxide

Claim 1

IN THE MANUFACTURE OF HYDROGEN PEROXIDE BY THE CYCLIC PROCESS OF HYDROGENATING A WORK SOLLUTION CONTAINING AN ALKYLATED ANTHRAQUINONE IN THE PRESENCE OF A NOBLE METAL CATALYST SELECTED FROM THE GROUP CONSISTING OF PLATINUM AND PALLADIUM TO PRODUCE THE CORRESPONDING ALKULATED ANTHRAHYDRQUINONE OXIDIZING SAID ALKYLATED ANTHRAHYDROQUINONE TO PRODUCE HYDROGEN PEROXIDE AND REFORM SAID ALKYLATED ANTHRAQUINONE, AND EXTRACTING SAID HYDROGEN PEROXIDE FROM SAID WORK SOLUTION, THE IMPROVEMENT WHICH COMPRISES ADDING AN ALKALINE, WATER-SOLUBLE COMPOUND TO SAID WORK SOLUTION OF A TYPE WHICH IS CAPABLE OF SIGNIFICANTLY RAISING THE PH OF SAID SOLUTION, IN THE AMOUNT OF ABOUT 1X10-6 TO 1X10-1 MOLES PER LITER, SAID COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF ALKALI METAL, SALTS, ALKALINE, EARTH METAL SALTS, ALKAI METAL HHYDROXIDES, ALKALINE EARTH METAL HYDROXIDES, ALKALI METAL OXIDES, ALKALINE EARTH METAL OXIDES, AMMONIA AMMONIUM SAALTS AND WATER-SOLUBLE AMINES, AND CARRYING OUT SAID CATALYLTIC HYDROGENATION OF SAID SOLUTION OF SAID ALKYLATED ANTHRAQUINONE IN THE PRESENCE OF SAID COMPOUND, SAID COMPOUND INCREASING THE ACTIVITY OF SAID CATALYST DURING HYDROGENATION AND THEN PASSING SAID SOLUTION TO SAID OXIDATION STAGE.