Calcium phosphate catalysts and method of production

Claim 1

THAT METHOD OF MAKING A DEHYDROGENATION CATALYST COMPRISING THE STEPS OF ADDING TO AN AQUEOUS CALCIUM HYDROXIDE SLURRY A SOLUTION OF A PHOSPHATE SELECTED FROM THE GROUP CONSISTING OF ORTHOPHOSPHORIC ACID AND MONOCALCIUM PHOSPHATE AT A RATE SUCH THAT THE SLURRY REMAINS ALKALINE, THE AMOUNTS OF SAID PHOSPHATE AND OF SAID SLURRY BEING SUCH AS TO PRECIPITATE CALCIUM ORTHOPHOSPHATE OF CAO:P2O5 WEIGHT RATIO OF ABOUT 1.3:1 TO 1.9:1, THEN ADDING AN AQUEOUS SOLUTION OF A COMPOUND OF A METAL SELECTED FROM THE GROUP CONSISTING OF COPPER AND IRON IN AN AMOUNT TO FORM BY ION EXCHANGE WITH THE CALCIUM PHOSPHATE, ORTHOPHOSPHATE OF SAID METAL CONTAINING FROM 2 TO 20% BY WEIGHT OF THE METAL AS THE PHOSPHATE BASED ON THE WEIGHT OF PRECIPITATED CALCIUM PHOSPHATE, WASHING AND DRYING THE PRODUCT, ADDING TO SAID PRODUCT ABOUT 2 TO 15% BY WEIGHT, BASED ON THE PRECIPITATED CALCIUM PHOSPHATE, OF AN INORGANIC POTASSIUM COMPOUND DECOMPOSABLE TO POTASSIUM OXIDE BY HEAT, PELLETIZG HTE MIXTURE, AND CALCINING THE PELLETS AT ABOUT 1,000*C.