Cerium Oxide, Ceric Oxide, Ceric Dioxide, Dioxo Cerium, Ceria, Ceroxide, 1306-38-3

Cerium Oxide, Ceric Oxide, Ceric Dioxide, Dioxo Cerium, Ceria, Ceroxide, 1306-38-3

🧪 Cerium Oxide (CeO₂)

1️⃣ Chemical Identity

• Chemical Name: Cerium(IV) Oxide

• Molecular Formula: CeO₂

• Molecular Weight: 172.115 g/mol

• CAS Number: 1306-38-3

• EC Number: 215-150-4

• Appearance: Pale yellow-white powder

• Melting Point: ~2400 °C

• Density: 7.22–7.65 g/cm³

• Solubility: Insoluble in water, limited solubility in acids

• Stability: Stable in oxidative environments

• pH (aqueous suspension): Slightly basic (~8.0–8.5)

2️⃣ Synonyms

• Ceria

• Ceric Oxide

• Ceric Dioxide

• Dioxo Cerium

• Cerium (+4) Oxide

• Cerium Oxide Nanopowder

3️⃣ Applications

• Glass & Optics: Polishing LCD screens, optical lenses, microscope objectives

• Automotive: Catalysts for exhaust gas control, NOx reduction

• Fuel Cells: Solid electrolyte, oxygen storage material

• Ceramics: Pigment and thermal stabilizer

• Electronics: Sensors, semiconductors, oxygen buffering

• Defense Industry: Laser optics, precision polishing systems

• Metallurgy: Oxygen/sulfur removal in steel, brightener for titanium alloys

4️⃣ Alternatives / Substitutes

• Zirconium Oxide (ZrO₂) – ceramics and catalysts

• Aluminum Oxide (Al₂O₃) – polishing and micro-abrasion

• Cerium Carbonate (Ce₂(CO₃)₃) – cost-effective glass polishing

• Neodymium Oxide (Nd₂O₃) – electronics and optics

5️⃣ Sectoral Compatibility

6️⃣ Production

• Ore Source: Monazite and bastnäsite rare earth ores

• Process: Acid leaching → Solution purification → Oxidation → Crystallization

• Main Producer Countries: China, USA, Australia, India

• Purity Grades: 99.9% – 99.999%

• Forms Available: Nano-grade, micronized, technical grade, high-purity grade