What is Cerium Oxide CeO2 powder ？
Cerium(IV) oxide, also called ceric oxide, ceric dioxide cerium oxide, or cerium dioxide, is an oxide of the rare-earth metal cerium. It is a white, pale yellow powder with the chemical formula CeO2.CeO2 is an important commercial product and an intermediate in the purification of the element from the ores. The distinctive property of this material is its reversible conversion to a non-stoichiometric oxide.
Cerium oxide has a 7.13g/cm3 density and a melting point of 2397℃. It is insoluble in water and alkali but slightly soluble in acid. Under temperatures of 2000 ℃ and 15 mph, pressure can be achieved by hydrogen reduction cerium oxide. Cerium oxide temperature between 2000 ℃ and free pressure-free at five mph. Cerium oxide is light yellow, reddish, and pink, and its performance is to be polished material, catalyst, catalyst carrier (assistant), UV absorber, fuel cell electrolyte, automobile tail gas absorber, electronic ceramics, etc.
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Performance of Cerium Oxide CeO2 powder：
At a temperature of 2000℃ and a pressure of 15MPa, hydrogen can reduce cerium oxide to obtain cerium oxide. When the temperature is free at 2000℃, and the pressure is free at 5MPa, the cerium oxide is yellowish, reddish, and pink. Its performance is to make polishing materials, catalysts, catalyst carriers (auxiliaries), ultraviolet absorbers, fuel cell electrolytes, automobile exhaust absorbers, electronic ceramics, etc.
Technical Parameter of Cerium Oxide CeO2 powder：
| |
CeO2 3N |
CeO2 4N |
CeO2 5N |
| TREO |
99.00 |
99.00 |
99.50 |
| CeO2/TREO |
99.95 |
99.99 |
99.999 |
| Fe2O3 |
0.010 |
0.005 |
0.001 |
| SiO2 |
0.010 |
0.005 |
0.001 |
| CaO |
0.030 |
0.005 |
0.002 |
| SO42- |
0.050 |
0.020 |
0.020 |
| Cl- |
0.050 |
0.020 |
0.020 |
| Na2O |
0.005 |
0.002 |
0.001 |
| PbO |
0.005 |
0.002 |
0.001 |
How is Cerium Oxide CeO2 powder produced?
Cerium salt roasting method:
The cerium salt roasting method is to put the raw material containing cerium into the baking furnace with the flux and perform oxidation roasting at high temperatures to produce cerium oxide and carbon dioxide gas. The reaction equation is:
2CdCO3(s) + 3O2(g) → 2CeO2(s) + 2CO2(g)
The product was filtered, washed, and dried to obtain cerium oxide. To improve the purity of cerium oxide, it is also necessary to carry out purification treatments such as washing and neutralization. This technique has the benefits of easy equipment, simple operation, and cost-effectiveness. However, it's not an easy task to make high-purity Cerium oxide.
Cerium nitrate method:
The cerium nitrate method uses it as raw material dissolves it in water, adds an appropriate amount of oxalic acid or acetic acid, heat concentrates, and then dries to obtain cerium oxide. The reaction equation is:
Ce(NO3)3(aq) + H2C2O4(aq) → CeO2(s) + 2HNO3(aq) + CO2(g)
The cerium nitrate method needs to use nitric acid as a solvent, which is easy to cause environmental pollution. At the same time, the method also needs to be washed and dried several times, and the production process is more complicated.
Oxalic acid precipitation method:
The oxalic acid precipitation method is the reaction of oxalic acid and cerium nitrate to produce ceric oxalate precipitation and filtration, washing, and drying to obtain ceric oxide. The reaction equation is:
Ce(NO3)3(aq) + H2C2O4(aq) → CeC2O4(s) + 2HNO3(aq)
The oxalic acid precipitation method has the advantages of a simple production process and high product purity, but the cost of oxalic acid is high, resulting in high production costs.
Co-precipitation method:
The co-precipitation method is to add an appropriate amount of alkali to the solution containing a variety of cations so that the cations and anions are precipitated together, and the cerium oxide is obtained by filtering, washing, and drying. This method has the advantages of a simple preparation process and high product purity, but it isn't easy to prepare high-purity cerium oxide.
Applications of Cerium Oxide CeO2 powder:
Electronics and Communications:
Cerium oxide is used in various applications in communications and electronics. It can be used as a substrate material and packaging material for electronic components to improve the reliability and stability of products. In addition, cerium oxide can also be used to manufacture optical fibers and communication devices to improve the transmission quality and speed of communication signals.
Catalyst:
Cerium oxide is an excellent catalyst material widely used in chemical reaction processes such as hydrogenation, oxidation, and dehydrogenation reactions. It can improve the rate and selectivity of the reaction while also reducing the conditions and costs of the reaction.
Medical and Pharmaceutical:
Cerium oxide has some special applications in the medical and pharmaceutical fields. It can be used as a sensor material in medical devices to detect chemical compositions and drug concentrations in patients. In addition, cerium oxide can also be used as a drug carrier for drug delivery and treatment.
Polishing agent:
Cerium oxide can be used as a polishing agent for the surface polishing of metals, glass, gems, and other materials. It can reduce the surface roughness and improve the surface gloss and mirror effect.
Pigments and Coatings:
Cerium oxide can be important in pigments and coatings for producing high-grade coatings and pigment products. It can improve the whiteness and hiding power of the product and also control the product's drying speed and coating effect.
Environmental protection:
Cerium oxide also has some applications in the field of environmental protection. It can be used as an automobile exhaust purifier and catalyst to reduce the emission of harmful substances in automobile exhaust. In addition, cerium oxide can also be used as a water treatment agent to remove harmful substances and odors from water.
Storage Condition of Cerium Oxide CeO2 powder：
Cerium Oxide CeO2 powder should be stored in dry, cool and sealing of the environment, can not be exposure to air, in addition, should avoid the heavy pressure, according to ordinary goods transportation.
Packing & Shipping of Cerium Oxide CeO2 powder：
It is packed in double plastic bags inside, which can be filled with argon in a vacuum; it can be vacuumed and filled with argon for protection.
Cerium Oxide CeO2 powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Cerium Oxide CeO2 powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.
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