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How many ounces (or grams) of platinum are there in a vehicle catalytic converter?

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How many ounces (or grams) of platinum are there in a vehicle catalytic converter?

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Not ounces, not grams, probably milligrams: it is a very thin coating on a ceramic body. It pays to recycle the platinum from the catalytic converters, but it wouldn’t be enough for an engagement ring 😉 ____________________________________________ EDIT: Mark me surprised, but I was off by orders of magnitude, according to a document at: www.utexas.edu/research/ceer/greenmaterial/ Assignments/Sample%20Projects/platinum%20flows.doc (direct linking doesn’t work, google for “Flow of Platinum and the Platinum Group Metals in the United States” to find the .doc) the average converter may contain 1.5gram of Platinum group elements (Platinum, Rhodium, palladium) Apologies…

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