Cerium chloride is the most redox active rare earth chloride, and its Ce3+/Ce4+The reversible conversion characteristics endow it with excellent catalytic function and electron transfer ability, and is a key starting material for the synthesis of catalysts, functional materials and cerium-based compounds.
Chemical properties
- Solubility: soluble in water (solubility at 25°C: 137 g/100mL); Soluble in ethanol, methanol and other polar solvents; Insoluble in non-polar organic solvents.
- Redox: Ce3+It can be oxidized to Ce by a strong oxidizing agent4+（E°=1.72V）
- Hydrolysis: Aqueous solution is acidic (pH≈3-4)
Fields of application
Catalytic field
- Organic Synthesis: Friedel-Crafts Alkylation Catalyst (>95% conversion)
- Environmental Catalysis: Co-catalyst for Automobile Exhaust Gas Purification (20-30% increase in Pt/Rh activity)
- Polymerization catalysis: Lewis acid catalyst for ring-opening polymerization of ε-caprolactone
Functional materials
- Luminescent material: Ce3+Doped phosphor (emits 350-450 nm ultraviolet blue light)
- Ceramic electrolytes: preparation of CeO2Base solid electrolyte (800°C conductivity>1 S/cm)
chemosynthesis
- Organometallic reagents: prepare CeCl32LiCl and other complexing reagents
- Pharmaceutical intermediates: catalyst for the synthesis of anticancer drug trabectedin
- Electrodeposition: Molten salt electrolysis is a raw material for the preparation of high-purity cerium metal
