![]() ![]() WFEC will give reasonable suggestions and solutions on the basis of customer demand. The outlet NO conversion of honeycomb catalysts monotonously decreases with increased due to the reduced specific surface areas. The foils in metallic substrates can be brazed/welded together to provide good mechanical durability and resistance to thermal shock. The ceramic honeycomb widely used as an extruded substrate in vehicle catalytic converters. The advantages of metal substrates are their high geometric surface area, low pressure drop and improved flow properties associated with the thin walls. Metallic catalyst substrates are made of thin metal foils. ![]() It reduces the unburned hydrocarbons and carbon. This kind of substrates are also used in other fields because of their unique material and structural properties such as high porosity, low thermal expansion, high geometric surface area, and low gas flow restriction. The oxidation catalyst is the second stage of the catalytic converter. Since 1970s, cordierite ceramic honeycombs have been developed as substrates for automotive catalytic converters to solve the environmental pollution problems. Damage to a cat can occur through physical damage, such as smashing the case on a speed bump, or chemical, such as allowing a contaminant to cause catalyst poisoning, which coats the honeycomb, keeping it from doing it’s job. Not enough oxygen is available to oxidize the carbon fuel in these engines completely into carbon dioxide and water thus toxic by-products are produced. This diagram from MagnaFlow shows the overall construction and reactions for a catalytic converter. Honeycomb Ceramic/Metal Substrate Catalyst for Auto Exhaust System Pt Pd Rh A catalytic converter is a device used to reduce the emissions from an internal combustion engine (used in most modern day automobiles and vehicles).
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