Gadolinium Oxide Gd2O3 Powder CAS 12064-62-9

Gadolinium oxide is an inorganic compound. The gadolinium oxide formula is Gd2O3. It is one of the most common forms of the rare earth element gadolinium, a derivative of which is a potential magnetic resonance imaging contrast agent.

Gadolinium oxide has two structures. Cubic (CI80, IA3), No.206) structures are similar to manganese (III) oxides and heavy trivalent lanthanide sesquioxides. The cubic structure has two types of gadolinium sites, each with a coordination number of 6 but with different coordination geometry. The second form is monoclinic (Pearson symbol MS30, space group C2/ M, number 12). At room temperature, the cubic structure is more stable. The phase changes into the monoclinic structure at 1200°C. Above 2100℃ to 2420℃ melting point, mainly hexagonal phase.

The thermal decomposition of hydroxide, nitrate, carbonate, or oxalate can form gadolinium oxide. Gadolinium oxide forms on the surface of the metal gadolinium.

Gadolinium oxide is a highly basic oxide that reacts with carbon dioxide to form carbonate. It is readily soluble in common inorganic acids, with the complication that oxalic acid, fluoride, sulfate, and phosphate are very insoluble in water and may coat oxide particles, thus preventing complete dissolution.

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There are several methods to synthesize gadolinium oxide nanoparticles, mainly through the reaction of gadolinium ion and hydroxide to precipitate hydroxide and then thermal dehydration to obtain gadolinium oxide. Nanoparticles are always coated with a protective material to prevent the formation of larger polycrystalline aggregates.

Gadolinium oxide nanoparticles are a potential magnetic resonance imaging contrast agent. Dexoside-coated gadolinium oxide particles of 20-40 nm size were prepared at 7.05 T(an abnormally high field compared to the 0.5-3 T of clinically used MRI scanners), and smaller particles with the relaxation of 4.8 s−1 mm −1 per gadolinium ion, between 2 and 7 nm, were tested as MRI reagents. 

Performance of Gadolinium Oxide Gd2O3 Powder:

Gadolinium Oxide is one kind of rare earth oxide, and it is mainly used for making optical glass and gadolinium yttrium garnets, which have microwave applications. High purity Gadolinium Oxide is used for making phosphors for color TV tubes.

Gadolinium hydroxide method: Gadolinium hydroxide is added to hydrogen peroxide for reaction to obtain gadolinium oxide. The benefits of this method are the low reaction conditions and simple use, but it requires a large amount of gadolinium hydroxide feedstock and high production costs.

Gadolinium oxide process: The decomposition of gadolinium oxide by heating can produce gadolinium oxide. The benefits of this method are the low reaction time and a simple operation, but it requires a large amount of gadolinium oxychloride feedstock and high production costs.

High-temperature decomposition method: Gadolinium carbonate or gadolinium hydroxide is added to carbon and heated to high temperatures to produce simple gadolinium and carbon dioxide. Elemental gadolinium reacts with chlorine gas to produce gadolinium chloride, which reacts with hydrogen peroxide to produce gadolinium chloride and finally heats up to decompose gadolinium chloride to produce gadolinium oxide. The benefits of this method are the low reaction time and simple operation, but it needs to use a lot of carbon and chlorine raw materials, and the production cost is high.

Ion exchange method: using rare earth metal salts as raw materials, dissolving them in solvents, and then adding ion exchangers to react to produce rare earth ion exchange resin and ammonium chloride. The resulting rare earth ion exchange resin is heated to a high temperature and burned to produce gadolinium oxide. The advantages of this method are low production cost and easy industrial production, but it needs to use a lot of rare earth metal salt raw materials.

Applications of Gadolinium Oxide Gd2O3 Powder:

Gadolinium oxide can be used as an analytical reagent to detect rare earth elements and other metal elements and is widely used in trace element analysis in geology, environmental protection, chemical industry, and other fields.

Catalyst: Gadolinium oxide can be used as a catalyst in petrochemical, automotive exhaust purification, and other fields, which can improve catalytic efficiency and selectivity.

Optical materials: Gadolinium oxide has the characteristics of high light transmission, high refractive index, and low scattering and can be used to prepare optical materials, such as lenses, prisms, and so on.

Electronic materials: Gadolinium oxide has good electrical conductivity and thermal stability and can be used to prepare electronic materials, such as resistors, capacitors, etc.

Rare earth permanent magnet materials: Gadolinium oxide can form rare earth permanent magnet materials with other earth metal elements, such as GdCo5, Gd2Co17, etc. These permanent magnet materials have the advantages of high remanence, high coercivity, and high magnetic energy products, which provide important technical support for the fields of motors, generators, and sensors.

Medical field: Gadolinium oxide also has a wide range of applications in the medical field, such as contrast agents in magnetic resonance imaging (MRI). Due to its paramagnetism, gadolinium oxide can shorten the rotation period of hydrogen atoms, resulting in improved imaging resolution and contrast. In addition, gadolinium oxide can also be used to prepare drug carriers and drug-targeted therapy.

Packing & Shipping of Gadolinium Oxide Gd2O3 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.
Gadolinium Oxide Gd2O3 Powder packing: vacuum packing, 100g, 500g or 1kg/bag, 25kg/barrel, or as your request.
Gadolinium Oxide Gd2O3 Powder shipping: could be shipped out by sea, by air, by express as soon as possible once payment receipt.


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