Products
Cerium dioxide
Synonyms:
Chemical Property of Cerium Dioxide
● Appearance/Colour:white to faintly yellow powder
● Melting Point:2400 °C
● Boiling Point:3500 °C
● PSA：34.14000
● Density:7.65 g/cm3
● LogP:-0.23760
● Water Solubility.:insoluble
● Hydrogen Bond Donor Count:0
● Hydrogen Bond Acceptor Count:2
● Rotatable Bond Count:0
● Exact Mass:171.89528
● Heavy Atom Count:3
● Complexity:0
Safty Information
● Pictogram(s):
Xi,
Xn
● Hazard Codes:Xi,Xn
● Safety Statements:S24/25:
Useful
Canonical SMILES:[O-2].[O-2].[Ce+4]
Detailed Introduction
Cerium dioxide, also known as ceria or cerium(IV) oxide, is an inorganic compound with the chemical formula CeO2. Here are some key points about cerium dioxide:
Properties:
Appearance: It is a pale yellow-white crystalline solid.
Structure: Cerium dioxide adopts a fluorite crystal structure, where each cerium ion is surrounded by eight oxygen ions, forming a cubic lattice.
High melting point: It has a melting point of around 2,550 degrees Celsius (4,622 degrees Fahrenheit).
Insolubility: Cerium dioxide is insoluble in water but can react with strong acids to form cerium salts.
Application
Catalyst: Cerium dioxide is widely used as a catalyst in various industrial processes. It exhibits redox properties and can participate in both oxidation and reduction reactions. Its most common application is as a catalyst for automotive exhaust systems, where it helps convert harmful emissions such as carbon monoxide and nitrogen oxides.
Polishing agent: Due to its high hardness, cerium dioxide is used as a polishing compound for glass, metal, and semiconductor surfaces. It is known for its ability to remove scratches and provide a smooth, high-quality finish.
Solid oxide fuel cells: Cerium dioxide is incorporated into solid oxide fuel cells as an electrode material. It helps enhance the performance and stability of the fuel cells.
UV absorber: Cerium dioxide nanoparticles are utilized in sunscreen formulations to protect the skin from harmful ultraviolet (UV) radiation. They act as UV absorbers, converting the absorbed energy into less damaging heat.
Oxygen storage: Cerium dioxide has the ability to store and release oxygen depending on the surrounding environment. This property makes it useful in applications such as oxygen sensors, fuel cells, and oxygen storage materials.
Cerium dioxide is generally considered safe when handled correctly. However, it is important to take necessary precautions when working with fine particles or powders to avoid inhalation or contact with skin and eyes.
