What is the purpose for use of a ceramic monolith honeycomb structure in catalytic converters?

Monolithic catalyst supports are extruded structures that are the core of many catalytic converters, most diesel particulate filters, and some catalytic reactors. Most catalytic converters are used for vehicle emissions control. Stationary catalytic converters can reduce air pollution from fossil fuel power stations.

Which ceramic is used in catalytic converters?

cordierite ceramic substrate
The cordierite ceramic substrate used in most catalytic converters was invented by Rodney Bagley, Irwin Lachman and Ronald Lewis at Corning Glass, for which they were inducted into the National Inventors Hall of Fame in 2002.

How is cordierite made?

Occurrence. Cordierite typically occurs in contact or regional metamorphism of pelitic rocks. It is especially common in hornfels produced by contact metamorphism of pelitic rocks. Two common metamorphic mineral assemblages include sillimanite-cordierite-spinel and cordierite-spinel-plagioclase-orthopyroxene.

What material is catalyst substrate?

Abstract: Extruded monolithic honeycombs are the standard catalyst substrates for emission control catalysts. Cordierite, a synthetic ceramic material of very low thermal expansion coefficient is the most commonly used material.

What vehicles have the most valuable catalytic converters?

According to data from 2020, the most expensive catalytic converter belonged to the Ferrari F430, with a mind-popping $3,770.00 price tag. Moreover, the F430 needed two of them, so a full replacement would run car owners $7,540 before labor costs.

Is cordierite a ceramic?

Cordierite ceramic is a magnesium aluminum silicate material that has been widely used in applications where thermal shock resistance is important. Cordierite ceramic is also useful because it has a low thermal expansion and good electrical insulation compared to other ceramic materials.

Which material is used in a monolithic type catalytic converter?

Abstract: Monolithic catalyst supports are made of thin metal foils made of ferritic iron-chromium-aluminum alloys of high thermal durability. The foils are corrugated to produce the honeycomb channels, typically resulting in a sinusoidal cell shape.

Why Corning cordierite?

For more than four decades, Corning has continued its research and development on cordierite, improving the material in new and innovative ways to meet the demands of today’s automakers for substrates with thinner walls and more channels per area, to further reduce emissions, with minimal impact on fuel economy.

What is cordierite made of?

Cordierite, discovered more than two centuries ago, is a naturally occurring mineral compound containing magnesium, iron, aluminum, and silicon. It’s found, among other places, near veins of tin in the mines of Southern England.

Is synthetic cordierite shock resistant?

This synthetic cordierite could be rapidly heated and cooled, while barely changing dimensions, making it very thermal shock resistant.