What is the chemical reaction in a catalytic converter?

Catalytic converters use reduction and oxidation (redox) reactions to reduce harmful emissions. They use a reduction catalyst composed of platinum and rhodium. It helps reduce nitrogen oxides (NOx) by removing nitrogen atoms from nitrogen oxide molecules (NO and NO2). This lets the free oxygen form oxygen gas (O2).

What are the 3 main reactions happening in a catalytic converter?

A three-way catalytic converter has three simultaneous functions: Reduction of nitrogen oxides into elemental nitrogen and oxygen: NOx→Nx+Ox. Oxidation of carbon monoxide to carbon dioxide: CO+O2→CO2. Oxidation of hydrocarbons into carbon dioxide and water: CxH4x+2xO2→xCO2+2xH2O.

What factors affect the rate of reaction in a catalytic converter?

The key factors that would affect the rate of reaction would be the temperature of the reaction, pressure, the concentration of reactants, surface area, and catalysts [12]. If the temperature of the reaction is increased, the kinetic energy of the molecules (moving energy) would increase.

Is there a problem with the catalytic converter?

Catalytic converters often last for 10 years or more, but they can become contaminated, clogged, overheated or physically damaged — leading to sluggish engine performance and, eventually, engine shutdown. If the exhaust flow is restricted, it means less air can get into the engine and performance suffers.

How much pollutants does a catalytic converter remove?

By most estimates, catalytic converters fitted inside the exhaust pipe of a gasoline-operated car convert over 90% of hydrocarbons (HC), carbon monoxide (CO) and nitrogen oxides (NOx) from the engine into less harmful carbon dioxide (CO2), nitrogen and water vapour.

What catalysts are commonly used in catalytic converters?

The catalyst component of a catalytic converter is usually platinum (Pt), along with palladium (Pd), and rhodium (Rh). All three of these platinum group metals, or PGMs, are extremely rare but have a broad range of applications in addition to catalytic converters.

Why do thieves want catalytic converters?

Thieves are motivated to steal catalytic converters because they contain precious metals, such as platinum and rhodium. Then, the thieves often sell the car parts for money on the black market. The parts are also expensive to replace, ranging between $2,000 to $2,500 for each catalytic converter.

What happens when the catalytic converter goes bad?

Among the bad symptoms of a compromised catalytic converter are: Sluggish engine performance, Reduced acceleration, Dark exhaust smoke, The smell of sulfur or rotten eggs from the exhaust, Excessive heat under the vehicle, Some of those symptoms can also be caused by other parts of the emissions system, so it’s …

Does removing a catalyst increase the rate of reaction?

Presence or Absence of a Catalyst Catalysts are substances that increase reaction rate by lowering the activation energy needed for the reaction to occur. A catalyst is not destroyed or changed during a reaction, so it can be used again.

What happens if you keep driving with a bad catalytic converter?

A bad catalytic converter will give off higher emissions than allowed by the state. So a car with a malfunctioning catalytic converter will not pass a vehicle inspection. And that means you won’t be able to drive your vehicle legally.

Can you drive long distance with a bad catalytic converter?

A Catalytic Converter Can Be Driven Indefinitely Driving with a bad catalytic converter is not too dangerous. If some small parts of your catalytic converter is plugged, you can still drive your car as usual. In the case that the catalytic converter is totally plugged, it will prevent you from running your vehicle.

What are the disadvantages of catalytic converter?

List of the Cons of Removing a Catalytic Converter