Cerium Oxide (Cerium Dioxide, CeO₂) Product Introduction
CAS No.: 1306‑38‑3 | Molecular Formula: CeO₂ | Molecular Weight: 172.11
1. Product Introduction
Cerium oxide is a stable rare earth oxide of cerium element with a typical fluorite-type cubic crystal structure. It appears as white to pale yellowish-white powder. High-purity products are pure white, while products containing minor light rare earth impurities show pale yellow to light reddish-brown color. Insoluble in water and alkali but soluble in strong inorganic acids, cerium oxide features excellent high-temperature thermal stability, unique oxygen storage and release performance, strong ultraviolet absorption capacity and superior polishing and cutting properties. As one of the core functional powder materials with extensive applications in the rare earth industry chain, it is widely applied in glass manufacturing, precision polishing, catalysis, new energy, electronic ceramics and other industrial fields.
2. Physical and Chemical Indexes
Item | Technical Parameters |
|---|---|
Appearance | White / Pale yellowish-white powder |
Density | 7.13 g/cm³ |
Melting Point | 1950‑2400℃ |
Solubility | Insoluble in water and alkali, soluble in concentrated strong acid |
Crystal Structure | Cubic fluorite type |
Purity Specification | Industrial grade ≥99%; High purity grade: 99.9%‑99.95%; Ultra-high purity grade: ≥99.99% (customizable) |
Particle Size | Ordinary micron grade, submicron grade, nano grade (customizable as required) |
Note: Chemical composition, particle size and specific surface area can be customized according to customers’ process requirements.
3. Core Characteristics
Excellent Polishing Performance: It achieves high cutting efficiency, superior surface finish and long service life with few surface defects on workpieces after polishing, serving as a core raw material for high-end rare earth polishing.
Oxygen Storage & Release Performance: The crystal lattice is rich in oxygen vacancies with outstanding redox cycle performance, making it an important auxiliary and carrier material in the catalytic industry.
Optical Properties: It has strong UV absorption capacity and barely absorbs visible light, suitable for glass UV blocking, decolorization and clarification processes.
High-Temperature Stability: It possesses strong thermal stability with stable physical and chemical properties under high-temperature conditions, adapting to ceramic and high-temperature catalytic working environments.
Adjustable Powder Performance: Purity, particle size and specific surface area are adjustable to meet the diverse application requirements of glass processing, precision polishing, catalysis and electronic ceramics industries.
4. Application Fields
4.1 Glass Industry
It is used as a glass decolorizer and clarifier, replacing toxic arsenic-based materials to eliminate bubbles and yellowing of glass, and improve glass transparency, strength and heat resistance. Added into architectural glass, automotive glass and crystal glass, it can block ultraviolet rays and endow glass with anti-UV functions.
4.2 Precision Polishing Industry
It is applicable for precision polishing of optical lenses, spectacle lenses, prisms, panel glass, sapphire substrates and crystal materials. It can be formulated into polishing powder and polishing slurry for optical processing, optoelectronic crystal and semiconductor CMP polishing processes, delivering ultra-smooth and high-flatness workpiece surfaces.
4.3 Catalysis & Environmental Protection
It serves as an auxiliary agent for automobile exhaust three-way catalysts and industrial waste gas purification catalysts. Relying on its oxygen storage and release function, it promotes the redox decomposition of harmful gases. It is also widely used in chemical synthesis catalysts and fuel cell catalytic materials.
4.4 New Energy & Electronic Ceramics
It acts as an oxygen ion conductor for solid oxide fuel cells. As a ceramic additive, it can reduce ceramic sintering temperature and improve material density, mechanical properties and dielectric properties. It is a key raw material for piezoelectric ceramics, electronic ceramics and refractory materials.
4.5 Functional New Materials
Used as a UV absorber auxiliary for anti-aging modification of coatings and polymer materials. It is also applied in the preparation of alloys, special refractory materials and rare earth luminescent materials.
5. Packaging Specifications
Conventional packaging: 25kg/drum, 50kg/bag. Sealed with inner PE plastic bag and outer woven bag or cardboard drum. Small-batch repackaging and customized packaging are supported, and packaging can be produced in accordance with export standards.
6. Storage & Transportation
Store in a cool, dry and ventilated warehouse with tightly sealed packages to prevent moisture caking.
Keep away from strong acids and strong reducing agents; do not store together with food supplies.
Handle with care during loading and unloading to avoid package damage and dust leakage.
The shelf life is 24 months under dry and sealed conditions. It is recommended to use up the product as soon as possible after opening.
Wear dust-proof protective equipment during operation to avoid inhalation of dust.
7. Purchase Instructions
We provide cerium oxide products with various purities and particle sizes, and support customized technical indicators. Welcome to contact us for sample consultation and bulk quotation.
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