The new Mazda3 has in it installed, new single-nanocatalyst technology that allows Mazda to use less precious metals in its C02 emissions-reducing catalytic converters.

Mazda is using its new Mazda3 (Axela in Japan) to introduce a world first in the fight to reduce C02 emissions. The Japanese company is the first auto maker to use single-nanocatalyst technology in cars which cuts down the use of precious metals by about 70 percent. The single-nanocatalyst employs nanotechnology to control material structures. It works on an even tinier scale than nanotechnology.

Modern cars have these catalyctic converters installed in their exhaust systems. The catalytics converters are expensive because they contain a base metal which is coated with precious metal particles (normally platinum, rhodium and/or palladium). The converter promotes chemical reactions that result in the purification of harmful exhaust gases before they leave a car and float into the atmosphere.

How Mazda's single-nanocatalyst works is basically by preventing small fine metal particles from clumping because of the hot exhaust gases. Therefore smaller amounts of these precious metals are used instead of increasing them as would normally happen as a counter measure to clumping.

Currently incorporated in the new Mazda3, it needs only 0.15g/L of precious metals instead of the 0.55g/L applied in the previous generation vehicle equipped with the conventional catalyst. This qualifies it as a Super Ultra-Low Emissions Vehicle (SU-LEV) in Japan, according to Japan's 2005 government regulations.

Mazda will progressively introduce the single-nanocatalyst to all its global markets.


Mazda: World’s first application of single-nanocatalyst technology in catalytic converters