| 摘要 |
A METHOD OF MANUFACTURING A COBALT CATALYST IS DESCRIBED, WHICH COMPRISES THE STEPS OF FORMING AN AQUEOUS SOLUTION OF A COBALT AMMINE COMPLEX, OXIDISING SAID SOLUTION SUCH THAT THE CONCENTRATION OF CO(&Igr;&Igr;&Igr;) IN THE OXIDISED SOLUTION IS GREATER THAN THE CONCENTRATION OF CO(&Igr;&Igr;&Igr;) IN THE UN- OXIDISED SOLUTION, AND THEN DECOMPOSING THE COBALT AMMINE COMPLEX BY HEATING THE SOLUTION TO A TEMPERATURE BETWEEN 80 AND 110°C FOR SUFFICIENT TIME TO ALLOW AN INSOLUBLE COBALT COMPOUND TO PRECIPITATE OUT OF THE SOLUTION. A CATALYST INTERMEDIATE IS ALSO DESCRIBED WHICH COMPRISES A COBALT COMPOUND, COMPRISING A CO(&Igr;&Igr;)/CO(&Igr;&Igr;&Igr;) HYDROTALCITE PHASE AND A CO₃O₄ COBALT SPINEL PHASE, WHEREIN THE RATIO OF COBALT HYDROTALCITE PHASE : COBALT SPINEL PHASE IS LESS THAN 0.6: 1, SAID COBALT HYDROTALCITE PHASE AND SAID COBALT SPINEL PHASE BEING MEASURED BY X- RAY DIFFRACTOMETRY.
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