Leverkusen, 12. January 2009 – The precious metals platinum, rhodium and palladium are as important as valuable components of modern three-way catalysts for gasoline engines. A saving of 70 percent of the amount of material reports Mazda through the use of nanotechnology in the Cat. The technique will first be used in the year of 2009 in the new Mazda 3 with 2.0-liter gasoline engine and then gradually in other models.
Metal clump in the Cat
In conventional catalysts, the precious metals are relatively loosely bound to the base material. This inevitably leads to a merger of precious metals to coarse lumps. The catalytically active surface is thereby reduced, the catalyst power decreases. Nevertheless, to achieve a sufficient effect, more precious metal is simply used in conventional kats. Smart is with nanotechnology. Mazda developed a new strand material structure and puts on very small precious metal particles: they have a diameter of less than five nanometers. Thus, only 0.15 instead of 0.55 grams of precious metal per liter of carrier material are needed.
Conversion rate is retained
Nevertheless, the conversion rate for the entire service life itself is to be maintained even under sharpest operating conditions in full, promises the manufacturer. Even the conditions for "Super Ultra-Low Emission Vehicles" (Su-LEV) in Japan are thus from Mazda 3 2.0 undercut. Emissions are even 75 percent below the values demanded by the legislator, Mazda.