Ceramic Vs Metallic Catalytic Converter

I attached an faq on catalytic converters for you to check out also.

Ceramic vs metallic catalytic converter.

The catalytic converter s construction is as follows. Ceramic combustors comprise the largest share of catalysts in the wood burning stove market. Metal substrate catalytic combustors provide a lower resistance to air flow and require less heat to warm up to operating temperature. Typically the ceramic converters are used on obdii vehicles.

Metal foil substrates are being promoted as the substrates of choice for automotive catalytic converters in the european market. The ceramic catalytic converters such as part mf99659hm are not as strong and usually do not last as long as metallic substrate converters. This screen is dipped and coated in a bath of liquid metal. The metallic ones are usually used on obd1 applications.

This grid is coated with a metal usually platinum or palladium that acts as the catalyst with the exhaust gases. Jul 10 2008 10 wny. However combustors using a metal substrate are becoming more popular with wood stove owners. Catalytic converters have a ceramic grid inside that the exhaust gases flow through.

The hearth room wood stoves and fireplaces. The price difference in any catalytic converter is based on the loading not the base material of the honeycomb. Prior to the mid 1980s the catalyst material was deposited on a packed bed of alumina pellets in early gm applications. Status not open for further replies.

In small sizes under 6 od the ceramic is usually more cost effective per piece over the metallic but due to difficulty in packaging ceramic and extra processes required the metallic total system cost often is more advantageous. Metallic catalytic converters are made using corrugated fecral foils which are rolled into a spiraling cylinder shape then put in a furnace to form an alumina al2o3 layer. Ceramics have primarily been used as the substrate for catalytic converters and share a bigger market than metallic substrates. The recipe for this bath is made up of precious metals like platinum gold and rhodium.

Crucq editor catalysis and automotive pollution control ii 0 1991 elsevier science publishers b v amsterdam 537 comparison of metal foil and ceramic monolith automotive catalytic converters g l. Vaneman ac rochester division general motors corporation abstract metal foil substrates are being promoted as the substrates of choice for automotive catalytic converters in the european market. Metallic vs ceramic catalytic converters. Thinner walls are seen to offer both lower flow restrictions and improved catalytic performance while metal s thermal characteristics are seen to benefit both performance and durability.

Nov 24 2008 1 i m on the hunt for a new cat for my stove i m. The catalyst support or substrate for automotive catalytic converters the core is usually a ceramic monolith that has a honeycomb structure commonly square not hexagonal. The grid also has to be heated up to ultra high temperatures to work correctly. A catalytic converter is basically a long screen made of either ceramic or a metal foil.

Cats start working at 1200f and are most efficient around 2200 2300f.