Rare Earth Ceria-Zirconia Solid Solution Tech Breaks International Monopoly

The reporter learned from Baotou Rare Earth High-tech Zone that 500-ton rare earth ceria-zirconia solid solution production lines in northern China have been built and are expected to reach production in September this year, which also signals that our country's ceria-zirconia solid solution technology has broken the international monopoly.

It is an ideal way to solve the problem of exhaust emissions by simultaneously converting three major harmful substances: carbon monoxide, hydrocarbons, and nitrogen oxides in automobile exhaust into harmless substances. To achieve this goal, the development and production of a cerium-zirconium solid solution is the key.

The production technology of the cerium-zirconium solid solution could realize the conversion of harmful gases that can convert automobile exhaust into carbon dioxide, water, and nitrogen through a chemical reaction. However, this technology has been monopolized by foreign markets for a long time. Companies in Japan, France, and the Netherlands have occupied 70% of the international cerium-zirconium solid solution market share, and domestic cerium-zirconium solid solution production enterprises were also foreign-owned enterprises before.

In 2019, Northern Rare Earth group teamed with Tianjin University of Technology successfully in the field of rare earth new materials and achieved the significant breakthrough of the three-way catalyst in a short time. Cerium-zirconium solid solution is one of the metal coatings of this component Important materials. The product test results show that the specific surface area of the cerium-zirconium solid solution products independently produced in my country is higher than 5% of the international advanced products.

The ceria-zirconia solid solution technology breaks the international monopoly. Cerium is one of the main products and accounts for a relatively large amount. Industry insiders analyzed that from the horizontal comparison of the industry, northern rare earth has a resource advantage that other producers cannot match, and it will soon attract the attention of auto environmental protection equipment manufacturers.

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