Vapor treatment for alloying and magnetizing platinum group metals

Yu Ki Taninouchi, Toru H. Okabe

Research output: Chapter in Book/Report/Conference proceedingConference contribution

6 Citations (Scopus)


Among platinum group metals (PGMs), Pt, Pd, and Rh are the essential constituents of automotive catalysts. Recovery of PGMs from catalyst scrap is important, but it is difficult because PGMs are chemically stable and are present as minor components in the scrap. In this study, the authors investigated the reaction between PGMs and FeCl2 vapor in order to develop a novel method for the separation and concentration of PGMs directly from catalyst scrap. The wire samples of Pt, Pd, and Rh were reacted with FeCl2 vapor in a steel vessel maintained at 1200 K. After the heat treatment, the surfaces of PGM wires were alloyed with Fe, and these samples became magnetized. The results obtained in this study suggest that a FeCl2 vapor treatment followed by magnetic separation can be utilized as an effective technique for the separation of PGMs directly from catalyst scrap.

Original languageEnglish
Title of host publicationRare Metal Technology 2017
EditorsHojong Kim, Neale R. Neelameggham, Harald Oosterhof, Xiaofei Guan, Shafiq Alam, Takanari Ouchi
PublisherSpringer International Publishing
Number of pages9
ISBN (Print)9783319510842
Publication statusPublished - 2017
Externally publishedYes
EventInternational Symposium on Rare Metal Technology, 2017 - San Diego, United States
Duration: Feb 26 2017Mar 2 2017

Publication series

NameMinerals, Metals and Materials Series
VolumePart F3
ISSN (Print)2367-1181
ISSN (Electronic)2367-1696


ConferenceInternational Symposium on Rare Metal Technology, 2017
Country/TerritoryUnited States
CitySan Diego

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Energy Engineering and Power Technology
  • Mechanics of Materials
  • Metals and Alloys
  • Materials Chemistry


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