RE-ACTIVATION OF DE-ACTIVATED NICKEL FOR NICKEL CARBONYL PRODUCTION

Canadian Patent Application No.:  CA  2525466

Abstracts

A process and apparatus for the production of a deposited metallic nickel product from an inactivated, pre-activated metallic nickel source, the process including treating the nickel source with hydrogen at a nickel activation temperature selected from 150-350°C, preferably, 150°C to effect re-activation of the nickel source; treating the re-activated nickel with carbonylation carbon monoxide to produce a gaseous mixture containing nickel carbonyl and carbon monoxide; collecting the nickel carbonyl gaseous mixture; and decomposing the nickel carbonyl in the gaseous mixture to produce the nickel product, and a resultant carbon monoxide gaseous mixture which is most preferably recycled back to treat the nickel source. The process provides efficacious re-activation of the de-activated nickel without the need for hydrogen sulfide or chloride anion.

 

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