The three-way catalytic converter is an important part of the modern automobile emission control system, which can effectively reduce the emission of harmful gases and particulate matter in automobile exhaust, reduce urban air pollution, and protect the ecological environment. In the manufacturing process of the three-way catalytic converter, the metal carrier is one of the important components of the catalyst, which can effectively improve the activity and stability of the catalyst, so we need to understand the relevant knowledge of the metal carrier of the three-way catalytic converter.
1. What is the three-way catalytic converter metal carrier
In a three-way catalytic converter, the catalyst can be fixed on a metal carrier, and the existing carriers on the market are generally ceramic or metal materials. The metal carrier is the main body of the catalyst, and the catalyst is a key component of the three-way catalytic converter. Therefore, the metal carrier plays a very important role in the three-way catalytic converter. The metal support helps to reduce the amount of the catalyst, improve the dispersion and stability of the catalyst, and at the same time increase the activity, anti-sulfidation and anti-poisoning capabilities of the catalyst.
2. The type of three-way catalytic converter metal carrier
At present, the three-way catalytic converter metal carrier mainly includes several types such as aluminum, titanium, iron, cobalt, nickel, etc., among which aluminum is the most common metal carrier material and is suitable for various types of catalysts. In addition, some new metal carrier materials, such as silicon, zirconium, magnesium, etc., are gradually being used in the manufacturing process of three-way catalytic converters. Different types of metal support materials have a certain impact on the catalytic efficiency, heat resistance and aging resistance of the catalyst,should make a comprehensive selection according to the actual situation and needs.DJN as market-leading technology with ISO-9001 certified company ,The housing is constructed from heavy gauge, high T304 stainless steel for corrosion resistance and long life.
Adhering to the principle that innovation and quality is the life, DJN environmental protection puts the selection, testing and trial production of materials in the first place.
3. Surface area and porosity of metal supports
The surface area and porosity of the metal support are one of the important factors restricting the catalytic activity and stability of the three-way catalytic converter. The surface area and porosity of the metal support determine whether the catalyst can be successfully adsorbed on the surface of the metal support, as well as the diffusion efficiency of the catalyst in the metal support. In general, the larger the surface area and porosity of the metal support, the higher the catalyst diffusion efficiency and the higher the activity.
4. Metal carrier preparation technology
The preparation technology of the metal support directly affects the performance and performance of the three-way catalytic converter. At present, the commonly used preparation processes include pressing and coating methods, and the coating methods are divided into two types: step-by-step coating and composite coating. Different types and shapes of metal support materials can be prepared by using different processes to meet different catalyst uses and car models.
In conclusion, the three-way catalytic converter metal support is the main body of the catalyst and plays a vital role in the preparation process of the three-way catalytic converter. Using different types and shapes of metal carrier materials, three-way catalytic converters suitable for different catalysts and meeting the needs of different vehicle models can be prepared. In the future, the development trend of three-way catalytic converters will be the improvement of preparation accuracy and catalyst activity, so as to realize the optimization and high efficiency of three-way catalytic converters.
Post time: Mar-22-2023
