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Rhodium is the rarest and most expensive of the platinum group metals, primarily recovered from spent three-way autocatalytic converters where it serves as a NOx reduction catalyst. The market is extremely specialised.
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Listings include spent three-way autocatalysts, Rh/Pt gauze (from nitric acid plants), and Rh-bearing industrial catalysts.
PGM refineries and major automotive catalyst producers. Sellers are specialist autocatalyst recyclers and chemical manufacturers.
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