Monolithic Catalyst Vs Ceramic Honeycomb

Monolithic catalyst substrates figure 1 are made of ceramics or metal.

Monolithic catalyst vs ceramic honeycomb. Other channel cross sections are possible including triangular hexagonal trapezoidal and round. Ceramic substrates have been the choice for catalyst coating companies for decades. In the processes of the chemical industry however their current use is very limited. Metallic vs ceramic catalyst substrates.

Ceramic substrates honeycombs usually have square cells while most metallic substrates have sinusoidal channels. Monolithic ceramics and heterogeneous catalysts. The pelleted design is obsolete and increasingly difficult to find on the market. The flow pattern in the monolithic catalyst reactor was segmented gas liquid flow slug flow.

A catalyst support provided with an activated alumina layer which is formed on the surface of the ceramic honeycomb structure is disclosed. Applied catalysts manufactures a wide variety of abate voc ceramic monolith supported catalysts. Monoliths are sometimes called flow through substrates. Today almost all automobiles are equipped with either ceramic or metallic honeycomb supported catalysts.

Many coating companies will suggest ceramic to avoid production. Application areas in which monolithic catalysts have superior performance. Engineers prefer metallic coating companies prefer ceramic. Monoliths for automotive catalytic converters are made of a ceramic that contains a large proportion of synthetic cordierite 2mgo 2al 2 o 3 5sio 2 which has a low coefficient of thermal expansion.

The hydrogen pressure and the temperature were varied between 30 40 bar and 509 523 k respectively. Automotive oem s predominately utilize these parts due to their lower component costs. In the off road emission control applications monolithic metallic or ceramic catalyst supports became the standard. Monolithic catalyst supports are honeycomb structures with many small cells or parallel channels that allow exhaust gases to run axially through the catalyst.

In the case of honeycombs cordierite is the. Honeycomb shaped monolithic catalysts are the standard catalyst shape in most environmental applications. Honeycombs and foams william m carty and peter w lednor recent advances have been made in research on ceramic monolithic catalyst supports particularly on honeycombs and ceramic foams.