The evolution and future of catalytic converter

The use of automobiles cause serious pollution to the environment, especially the atmosphere, because the internal combustion engine of automobiles produces carbon monoxide, hydrocarbons, nitrogen oxides, sulfur and hydrogen compounds and other harmful components, among which CO, HC and its NO are the main air pollution components emitted by automobiles.

As the most important external purification device installed in the exhaust system of automobiles, the catalytic converter makes use of the precious metal catalysts to enhance the activity of CO, CH and NOx under the high temperature environment, which can transform the harmful gases into harmless carbon dioxide, water and nitrogen by redox reaction. It can purify the vehicle exhaust gas.

The history of research and development of catalytic converter

Ternary catalytic converters have a role to play in combating exhaust pollution that should not be underestimated, and this was actually demonstrated as early as the 1960s. At that time, although the converter conversion rate of CO and CH reached 90%, the conversion rate of NOx was very low and could not achieve efficient purification.

In the late 1970s, as the U.S. proposed to control NOx emissions, the change of ternary lies in the beginning of the use of platinum and rhodium precious metals as catalysts on the one hand, and on the other hand, in order to make the chemical reaction more complete, ternary used segmented carriers, which were more stable but the conversion rate was not significantly improved.

In the late 1980s, palladium catalysts became mainstream, with high activity and excellent thermal stability, and were a very popular component of catalytic converters at the time.

The development of catalytic converter drive

As seen above, the development of three-way catalytic converters comes from three main sources:

First, the requirements of the times. The environment requires us to constantly improve the pollutant limit value, if only maintain the old components, simply can not meet the changing exhaust emission requirements.

Second, the change of technology. With the continuous updating of technology, various raw materials have been newly developed and applied, and both the process and raw materials help us to produce better products.

Third, the development of the industry. The automotive industry is undergoing radical changes every year, as auto parts of the three natural need to keep pace with the times, in order to match the vehicle use.

The market prospect of three-way catalytic converters

According to incomplete statistics, the global catalytic converter industry scale has reached tens of billions of dollars, and the catalytic converter market will show a rapid growth trend in the next five years. Data show that with the increasingly stringent environmental regulations and consumers' increasingly high requirements for vehicle emission quality, the market for catalysts will continue to expand. The growth rate of the catalytic converter market is expected to remain above 20% in the coming years.

In China, for example, in 2023 China will fully implement the national six, compared to the national five vehicle exhaust pollutant limits significantly increased, this change is the globalization, especially in the current global for environmental protection attaches great importance to the demand for catalytic converter will be greatly increased, the market prospects will be more broad.

However, in the increasingly competitive catalytic converter market, how to improve the quality and performance of products and reduce costs is the key issue. This requires enterprises to explore deeply in technological innovation and management to enhance their core competitiveness.

And this requires companies to explore deeply in technological innovation and management to improve their core competitiveness.

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