Cerium oxide for catalysis & polishing

Description

1. Product Overview
This high-purity Cerium Oxide (CeO₂) is a precision-engineered rare earth compound essential for high-performance catalytic converters and ultra-fine surface polishing. Its unique dual functionality—serving as both an oxygen storage capacitor in emissions control and a mechanical-chemical abrasive in precision optics—delivers superior process efficiency and end-product quality. In a market increasingly regulated on emissions and demanding nanoscale surface finishes, this product provides a strategic, cost-performance advantage over alumina or zirconia alternatives.

2. Key Specifications & Technical Characteristics

• Chemical Composition: CeO₂ (with controlled trace levels of La₂O₃, Pr₆O₁₁, and Nd₂O₃ to meet catalysis or polishing grades)

• Purity Level: 99.5% – 99.99% (REO basis), customizable per application (standard: 99.9%)

• Physical Characteristics:

  • Form: Fine, free-flowing powder

  • Color: Pale yellow to off-white (calcined grade)

  • Particle Size (D50): Catalysis grade: 0.5–2.0 µm; Polishing grade: 0.8–4.0 µm (narrow distribution)

  • Surface Area (BET): Catalysis grade: ≥ 80 m²/g; Polishing grade: 5–15 m²/g

  • Tap Density: 1.2 – 2.0 g/cm³

• Packaging Options: 25 kg multi-layer paper/PE bags, 500 kg FIBC (big bags), or 1,000 kg drum with desiccant liner

• Shelf Life: 36 months when stored in dry, sealed conditions (avoid acidic vapors)

3. Core Industrial Applications

• Primary Industries: Automotive emissions control, precision optics, semiconductor CMP (chemical-mechanical planarization), specialty glass, and petrochemical catalysts.

• Operational Use Cases:

  • Catalysis: As an oxygen storage material in three-way catalytic converters (TWCs), reducing NOx, CO, and HC emissions by >95% under lambda cycling.

  • Polishing: For high-precision finishing of LCD glass, camera lenses, and silicon wafers (CMP slurry component).

• Performance Advantage: In catalysis, cerium oxide’s Ce³⁺/Ce⁴⁺ redox cycle outlasts non-rare earth alternatives by 2–3x in thermal aging tests (1,000°C). In polishing, its controlled hardness (Mohs ~6) yields a scratch‑free, sub‑nm surface roughness (Ra ≤ 0.5 nm), reducing polishing time by 20–30% vs. conventional alumina.

4. Competitive Advantages

• Quality Consistency: ISO 9001:2025 certified; batch‑to‑batch traceability with COA and XRD phase analysis provided for every shipment.

• Supply Reliability: Backed by long‑term rare earth feedstock agreements (non‑conflict, diversified sourcing) ensuring 98%+ on‑time delivery.

• Logistics Capability: Dedicated haz‑compliant warehousing in three continents (Asia, EU, North America) for regional just‑in‑time delivery.

• Price Competitiveness: Direct mine‑to‑manufacturer pricing removes 2–3 intermediary layers, reducing landed cost by 12–18% vs. spot market.

• Sustainability: Hydrometallurgical processing with 92% water recycling; compliant with EU REACH, RoHS, and TSCA.

• Technical Support: In‑house application engineers provide slurry recipe optimization and catalytic washcoat formulation support.

5. Commercial & Supply Information

• Minimum Order Quantity (MOQ): 1 metric ton (MT) for polishing grade; 5 MT for catalysis grade

• BULK 20MT Loading Capacity: 20 MT per 20‑foot dry container (FIBC or drum palletized) – standard export packaging

• Lead Time: 14–21 days from PO confirmation for bulk orders; samples (500 g) available in 5 days