What is Cerium Dioxide?

Cerium Dioxide, also known as Ceria or Cerium Oxide, is a rare earth metal oxide used primarily as a precision polishing agent and industrial catalyst. It appears as a pale yellow to white powder, insoluble in water and alkali, slightly soluble in acid.

Ceria is produced by calcination of cerium oxalate or cerium hydroxide. Its unique combination of mechanical abrasion and chemical reactivity with silica makes it the preferred polishing compound in the glass and optics industry.

Our Cerium Dioxide is supplied in multiple purity grades and particle sizes to suit different application requirements.

• 99% (3N):Suitable for general industrial applications such as glass decolorization, ceramic additives, and catalyst support.
• 99.9% (3N5) / 99.99% (4N):Recommended for precision polishing of optical lenses, LCD flat panel displays, automotive glass, and semiconductor wafers, where particle consistency and surface finish quality are critical.
• 99.999% (5N):Required for high-end applications such as solid oxide fuel cell electrolytes and advanced electronic ceramics, where trace impurities affect performance.

For custom purity or particle size requirements, please contact us at info@fscichem.com.

Structural Formula: CeO2

Cerium Dioxide Specifications:

Cerium Dioxide Applications:

Cerium Dioxide for Glass & Optics Polishing:

• As a high-precision polishing agent for optical lenses, LCD flat panel displays, automotive glass, eyeglass lenses, and semiconductor wafers, Cerium Dioxide offering faster removal rates and superior surface finish compared to conventional abrasives;
• Used as a decolorizer and UV absorber in glass manufacturing, including automotive glass, solar panels, and photochromic glass.

Cerium Dioxide for Catalyst & Industrial:

• Used as a catalyst and catalyst support in automotive three-way catalytic converters to treat exhaust emissions of CO, NOx, and unburnt hydrocarbons;
• Used in fluid catalytic cracking (FCC) catalyst formulations in petroleum refining;
• Used as an electrolyte material in solid oxide fuel cells (SOFCs) due to its ionic conductivity;
• Used in electronic ceramics, phosphors, and refractory oxide applications.

Packaging and Storage:

Packaging: Our cerium dioxide powder ins pacaked in 25 kg/drum.

Storage: Store in a dry, well-ventilated warehouse, away from moisture and acids.