Looking at Platinum Speciation in Three Way Catalysts The Problem Platinum group metals play a crucial role in a variety of applications and in particular for a host of catalytic applications. The largest application is currently in vehicle emission control (VEC) catalysts to efficiently reduce particulate matter, CO, NO x and hydrocarbons. This type of catalytic system is diverse and complex and generally contains 0.1-1 wt% active metal d

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