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KOREA INSTITUTE OF GEOSCIENCE AND MINERAL RESOURCES
THE WORLD'S LEADING RESEARCH
INSTITUTE OF GEOSCIENCE

KIGAM News

KIGAM founds the New Route of Recycling Platinum-group metals(PGMs)

  • Writeradmin
  • Date2016-06-13
  • Hit937
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Korea Institute of Geoscience and Mineral Resources (KIGAM)’s ongoing R & D efforts innovated the new route for precious metals such platinum and rhodium maximum separation possibilities. Best of our knowledge until now the crown ether amine combinations systems not reported yet in literature. This is the first report for platinum and rhodium separation from synthetic chloride solutions.

The precious metals widely utilized for industrial applications, at the time of manufacturing the certain amount of waste will generate and after usage of the particular metal products the secondary resources will generate.


Crystals of pure platinum grown by gas phase transport / source: https://en.wikipedia.org/wiki/Platinum >

Countries like Korea, having two major problems, one is landfilling with secondary resources another one limited natural resources. The new emerging metal recovery routes will fulfill the certain amount of national demand of precious metals. 

Platinum-group metals (PGMs) such as platinum and rhodium have very similar ionic radii (1.25 and 1.33 at +3 oxidation state) and similar properties. The separation of PGMs is most useful for the preparation of functional materials. Macrocyclic compounds such as crown ethers are tested for platinum and rhodium separation and are found to achieve marginal separation. Amines (used as extractants) are paired with macrocyclic compounds (used as synergists), and the separation factor between platinum and rhodium is increased with synergistic enhancement from a chloride solution from 39.8 to 132.6.

< Amines are paired with macrocyclic compounds, and the separation factor between platinum and rhodium is increased with synergistic enhancement from a chloride solution from 39.8 to 132.6. >

This research was conducted at KIGAM (Korea Institute of Geoscience and Mineral Resources), The paper, “The role of macrocyclic compounds in the extraction and possible separation of platinum and rhodium from chloride solutions,” was just published in the journal “Scientific Reports” (Nature Publishing Group (NPG)) article reference: srep27668 on June 10th 2016.


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