Korean Journal of Metals and Materials (대한금속재료학회지)

The Korean Institute of Metals and Materials (대한금속재료학회)
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Recovery of Platinum from Spent Petroleum Catalysts by a Hydrometallurgical Method

  • Sun, Panpan (Department of Advanced Materials Science & Engineering, Institute of Rare Metal, Mokpo National University) ;
  • Lee, Manseung (Department of Advanced Materials Science & Engineering, Institute of Rare Metal, Mokpo National University)
  • Received : 2013.04.04
  • Published : 2013.12.05
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Abstract

Platinum was recovered from the leaching solution of spent petroleum catalysts by solvent extraction. The spent catalysts were first roasted at $800^{\circ}C$ to eliminate volatile matter. Most of the platinum in the spent catalysts was dissolved at an optimum leaching condition in a mixture of HCl and $H_2O_2$. Separation of platinum from the leaching solution was accomplished by solvent extraction with Aliquat 336 after iron was removed by extraction with TBP. Platinum and iron were stripped from the loaded Aliquat 336 and TBP by using 1 M $HClO_4$ and 0.1 M HCl, respectively. Finally, HCl in the raffinate was recovered by extraction with TEHA and then by stripping with water. The optimum conditions to dissolve platinum and to separate platinum by solvent extraction are reported together with the mass balance of the constituents of the spent catalysts in each step.

Keywords

Acknowledgement

Supported by : KEITI

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