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...o, due to its cost and the tendency to wear, the platinum was alloyed with rhodium. In the direct melt process, the bushing serves as a collector for the mol

...combusted]]. Automobile converters use [[platinum]] or [[palladium]] and [[rhodium]] as [[catalyst]]s. Hence the combustion ([[redox]]) process continues, bu ...ations because of unwanted additional reactions and/or cost. Palladium and rhodium are two other precious metals that are used. [[Cerium]], [[iron]], and [[ni

...side. Also, due to its cost and the tendency to wear, it was alloyed with rhodium. In the direct melt process, the bushing serves as a collector for the mol

...ss harmful ones using, generally, a combination of platinum, palladium and rhodium as catalysts. Catalytic converters have been steadily improved over the yea

...trogen]] occurred in 1980. This required a [[redox|reduction]] catalyst ([[rhodium]]) to [[redox|reduce]] the various [[nitrogen oxides]] into free nitrogen a