Making micro-porous, discrete, few micron size oxide compounds of metals, and the products

Claim 1

THE METHOD OF PRODUCING A FINELY DIVIDED, MICROPOROUS, WATER-INSOLUBLE OXYGEN COMPOUND OF A METAL SELECTED FROM THE CLASS CONSISTING OF ALUMIUM, IRON AND MAGNESIUM, WHICH COMPOUND HAS A PARTICULES SIZE OF ABOUT THREE MICRONS AND SMALLER AND IS A MEMBER OF THE CLASS CONSISTING OF THE HYDROXIDE, OXIDE, AND CARBONATE, OF SAID METAL, WHICH METHOD INCLUDES THE COMBINATION OF STEPS WHICH COMPRISES (A) MIXING TOGETHER, IN SOLID STATE AND SO PROPORTIONED AS TO GIVE A SUBSTANTIALLY NEUTRAL REACTION SOLUTION AFTER REACTING TOGETHER WHEN DISSOLVED IN WATER, A MIXTURE OF WATER-SOLUBLE REACTANTS WHICH ON SOLUTION IN WATER REACT TOGETHER TO LIBERATE CARBON DIOXIDE AND WHICH MIXTURE CONTAINS (A) A WATER-SOLUBALE ALKALINE-REACTING CARBONATE AND (B) A WATER-SOLUBLE SALT OF THE METAL WHICH IS TO BE IN THE WATER-SOLUBLE MICRO-POROUS END PRODUCT AND HAS AS ONE OF ITS INGREDIENTS AN ACID-REACTING CONSTITUENT SELECTED FROM THE CLASS CONSISTING OF (I) THE SPECIFIC WATER-SOLUBLE SALT INCLUDED IN THE METAL WHICH IS TO BE IN THE END PRODUCT AND (II) AN ADDED WATERSOLUBLE SOLID ACID-REACTING SUBSTANCE; THE ANION IN THE WATER-SOLUBLE SALT OF THE METAL WHICH IS TO BE IN THE END PRODUCT BEING SUCH THAT FORMS A WATER-SOLUBLE SALT WITH THE CATION OF THE CARBONATE AND OF ANY ADDED SOLID ACIDREACTING SUBSTANCE, AND THE ANION OF THE LATTER BEING SUCH AS TO FORM A WATER-SOLUBLE SALT WITH THE METAL WHICH IS TO BE IN THE END PRODUCT; (B) INTRODUCING THE MIXTURE INTO WATER TO BRING ABOUT THE REACTION LIBERATING CARBON DIOXIDE AND CONCURRENTLY THEREBY FORMING A MICRO-POROUS PRECIPITATE OF THE WATER-INSOLUBLE OXYGEN COMPOUND SELECTED FROM THE CLASS CONSISTING OF THE CARBONATE AND HYDROXIDE OF THE METAL OF THE END PRODUCT; AND (C) SEPARATING THE PRECIPITATE FROM THE SOLUTION; AND DRYING THE PRECIPITATE UNDER CONDITIONS TO AVOID CRUSTING AND SINTERING.