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Comment PDF Environment, Health, Safety & Security

Chementator: A platinum-free catalytic converter    

By Gerald Ondrey |

Nippon Steel Materials Co., Ltd. (NSM; Tokyo, Japan; edlinks.chemengonline.com/7371-538) has developed a new catalyst for combustion engines that contains 70% less precious metals than conventional catalytic converters. The catalyst is expected to not only lead to lower costs, but also outperform conventional catalysts. Conventional catalytic converters typically include platinum, rhodium and palladium supported on an alumina carrier that is doped with cerium oxide to improve the oxygen adsorption. Instead, NSM’s catalyst features an iron oxide support — a composite of several different nano-sized crystalline phases of iron oxide — with alkaline earth metals as the additive. This carrier is said to have 100 times higher O2 adsorption capacity than conventional supports. Only Pd (or Pd with a small amount of Rh) is used on the new support. The catalyst can operate at temperatures up to 900°C and is expected to have a long operating life. NSM is testing the catalyst on mopeds (to meet the Euro 3 regulation), and plans to apply the technology for diesel-fueled automobiles in the near future.   Click here for a full pdf version of the Chementator Section  
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