In the catalytic converter, there are two different types of catalyst at work, a reduction catalyst and an oxidation catalyst. Both types consist of a ceramic structure coated with a metal catalyst, usually platinum, rhodium and/or palladium.ow Catalytic Converters Reduce Pollution. In chemistry, a catalyst is a substance that causes or accelerates a chemical reaction without itself being affected. Catalysts participate in the reactions, but are neither reactants nor products of the reaction they catalyze.
Here's a look at the top 50 draft-eligible prospects for next year, led by quarterback Connor Cook, defensive lineman Joey Bosa, cornerback Vernon Hargreaves, and offensive tackle Ronnie Stanley and Laremy Tunsil.
NFL players on the trading block: Big names who could get dealt (April 13, 2017, 10:42 PM ET) Titans releasing veteran cornerback Jason McCourty (April 13, 2017, 9:36 PM ET) Leonard Fournette among 22 prospects attending draft (April 13, 2017, 9:21 PM ET)