Preparation of homogeneous catalysts containing cobalt oxide and aluminum oxide

Claim 1

THE METHOD OF PREPARING POROUS, HARD COBALT OXIDEMOLYBDENUM TRIOXIDE CATALYST EXTGRUDATE CONTAINING A MAJOR PROPORTION OF ALUMINUM OXIDE AS THE CARRIER AND HAVING HIGH MECHANICAL STRENGTH CONSISTING ESSENTIALLY OF THE STEPS OF UNIFORMLY MIXING IN THE DRY STATE, FROM ABOUT 5-50% BY WEIGHT OF TOTAL CATALYST OF MOLYBDENUM OXIDE, HYDRATE ALUMINA CONTAINING FROM 15 TO 35% BY WEIGHT OF COMBINED WATER OF HYDRATION, AND A HIGHT SURFACE AREA CRYSTALLINE NON-PEPTIZABLE MATERIAL SELECTED FROM THE GROUP CONSISTING OF CALCINED ALUMINA, CALCINED ZIRCONIA AND CALCINED TITANIA, SAID CRYSTALLINE MATERIAL HAVING A SURFACE AREA OF FROM 100 TO 350 SQUARE METERS PER GRAM AND CONSISTITUTING FROM ABOUT 10% UP TO ABOUT 50% BY WEIGHT OF THE FINISHED CATALYST, ADDING TO SAID MIXTURE A WATER SOLUTION OF A DIVALENT COBALT SALT WHICH IS CAPABLE OF DECOMPOSING TO CABALTONS OXIDE ON HEATING THE CATALYST MIXTURE AFTER THE EXTRUDING STEP, TGHE AMOUNT OF COBALT ADDED PROVIDING FROM ABOUT 1% TO ABOUT 5% OF COBALT IN THE FINISHED CATALYST, SAID WATER SOLUTION OF SAID COBALT SALT CONTAINING AT LEAST 3% OF FREE NITRIC ACID AND UP TO ABOUT 20% OF NITRIC ACID, ADDING A SOLID COMBUSTIBLE ORGANIC REDUCING AGENT IN AN AMOUNT OF AT LEAST ONE MOLE OF REDUCING AGENT PER MOLE OF COBALT, EXPRESSED AS METAL, IN THE FINISHED CATALYST, WHICH UPON CALCINING FOR DECOMPOSITION OF SAID COBALT SALT IMPARTS POROSITY TO THE FINISHED CATALYST EXTRUDATE, MIXING THE AFORESAID INGREDIENTS WHEREBY SAID NITRIC ACID PEPTIZES SAID HYDRATE ALUMINA TO FORM A STIFF PASTE, EXTRUDING SAID PASTE, DRYING AND CALCINING THE EXTRUDATE AT A TEMPERATURE UP TO ABOUT 950* F. TO DECOMPOSE SAID COBALT SALT TO COBALTOUS OXIDE.

Claim 2

THE METHOD OF PREPARING POROUS, HARD COBALT OXIDEMOLYBDENUM TRIOXIDE CATALYST EXTGRUDATE CONTAINING A MAJOR PROPORTION OF ALUMINUM OXIDE AS THE CARRIER AND HAVING HIGH MECHANICAL STRENGTH CONSISTING ESSENTIALLY OF THE STEPS OF UNIFORMLY MIXING IN THE DRY STATE, FROM ABOUT 5-50% BY WEIGHT OF TOTAL CATALYST OF MOLYBDENUM OXIDE, HYDRATE ALUMINA CONTAINING FROM 15 TO 35% BY WEIGHT OF COMBINED WATER OF HYDRATION, AND A HIGHT SURFACE AREA CRYSTALLINE NON-PEPTIZABLE MATERIAL SELECTED FROM THE GROUP CONSISTING OF CALCINED ALUMINA, CALCINED ZIRCONIA AND CALCINED TITANIA, SAID CRYSTALLINE MATERIAL HAVING A SURFACE AREA OF FROM 100 TO 350 SQUARE METERS PER GRAM AND CONSISTITUTING FROM ABOUT 10% UP TO ABOUT 50% BY WEIGHT OF THE FINISHED CATALYST, ADDING TO SAID MIXTURE A WATER SOLUTION OF A DIVALENT COBALT SALT WHICH IS CAPABLE OF DECOMPOSING TO CABALTONS OXIDE ON HEATING THE CATALYST MIXTURE AFTER THE EXTRUDING STEP, TGHE AMOUNT OF COBALT ADDED PROVIDING FROM ABOUT 1% TO ABOUT 5% OF COBALT IN THE FINISHED CATALYST, SAID WATER SOLUTION OF SAID COBALT SALT CONTAINING AT LEAST 3% OF FREE NITRIC ACID AND UP TO ABOUT 20% OF NITRIC ACID, ADDING A SOLID COMBUSTIBLE ORGANIC REDUCING AGENT IN AN AMOUNT OF AT LEAST ONE MOLE OF REDUCING AGENT PER MOLE OF COBALT, EXPRESSED AS METAL, IN THE FINISHED CATALYST, WHICH UPON CALCINING FOR DECOMPOSITION OF SAID COBALT SALT IMPARTS POROSITY TO THE FINISHED CATALYST EXTRUDATE, MIXING THE AFORESAID INGREDIENTS WHEREBY SAID NITRIC ACID PEPTIZES SAID HYDRATE ALUMINA TO FORM A STIFF PASTE, EXTRUDING SAID PASTE, DRYING AND CALCINING THE EXTRUDATE AT A TEMPERATURE UP TO ABOUT 950* F. TO DECOMPOSE SAID COBALT SALT TO COBALTOUS OXIDE.