Cerium Oxide Powder (CeO₂)

Catalysts: Cerium oxide serves as an efficient catalyst or catalyst support in various fields, including automotive exhaust purification, petrochemicals, and fine chemicals. It can enhance various chemical reactions, improve reaction efficiency, and reduce energy consumption.

Electronic Materials: Due to its high dielectric constant and low resistivity, cerium oxide is used in the manufacture of capacitors, resistors, and other electronic components. Furthermore, it plays a crucial role in solid oxide fuel cells, enhancing their performance and efficiency.

Optical Materials: Cerium oxide, with its high refractive index and excellent optical transparency, is widely used in the production of optical lenses, filters, and other optical components. Additionally, its strong luminescence properties make it essential in fluorescent powders and display applications.

Glass and Ceramic Additives: Cerium oxide serves as an additive in glass and ceramic manufacturing, improving their thermal resistance, corrosion resistance, and mechanical strength. It plays a vital role in the production of specialty glasses and ceramic materials.

Other Applications: Cerium oxide also finds applications in polishing agents, pigments, coatings, and other fields. Its unique physical and chemical properties make it a key material in these areas.

Exceptional Thermal and Chemical Stability

One of the most prominent advantages of Cerium Oxide Powder (CeO₂) is its outstanding thermal stability and resistance to chemical degradation. It maintains structural integrity even under high-temperature environments exceeding 1000°C, making it ideal for demanding applications such as thermal barrier coatings and solid oxide fuel cells (SOFCs). This stability ensures long service life and reliability in both industrial and scientific settings.

Superior Polishing Performance

CeO₂ is widely recognized in precision glass polishing industries—especially in optics and electronics—for its unique chemical-mechanical polishing (CMP) characteristics. Compared to other rare-earth or alumina-based abrasives, cerium oxide offers a softer yet more chemically reactive interaction with glass surfaces. This results in faster removal rates, minimal subsurface damage, and a superior surface finish, especially on sensitive substrates like LCD panels, optical lenses, and silicon wafers.

Redox Capability for Catalytic Applications

CeO₂ possesses a remarkable oxygen storage and release capacity due to its Ce⁴⁺/Ce³⁺ redox cycle. This property makes it indispensable as a catalyst or catalyst support in automotive exhaust treatment (e.g., in three-way catalysts), water-gas shift reactions, and hydrogen production. Its ability to rapidly release or absorb oxygen enhances the overall catalytic efficiency and allows it to act as an oxygen buffer under fluctuating gas compositions.

Strong UV Absorption and Photocatalytic Properties

Due to its wide bandgap (~3.2 eV), Cerium Oxide exhibits excellent UV absorption and photocatalytic activity. It is increasingly used in advanced functional coatings—such as UV-blocking films and self-cleaning surfaces—offering protection against ultraviolet radiation while promoting organic pollutant degradation. In nanostructured form, CeO₂ also demonstrates potential in sunscreen formulations and biomedical applications due to its free-radical scavenging ability.

High Purity and Particle Control for Precision Applications

Modern CeO₂ powders, such as those offered in nanometer and submicron grades, provide high purity levels (>99.9%) and tailored particle size distributions. This is critical in industries where impurities can cause defects or interfere with desired reactions, such as semiconductor fabrication, thin-film deposition, or advanced ceramics production. Engineered powders offer greater consistency, batch-to-batch uniformity, and superior dispersibility.