PGM atmospheric leaching - yep c.100C temp and 3 hours seems to do it. Not a new discovery.
Doesn’t look like mega-capex and opex to build and run the process plant.
Sulfuric Acid-Chloride Leaching of Platinum, Palladium and Rhodium From Catalyst Residue Presentation
· June 2002 DOI: 10.13140/RG.2.1.5179.2887
