Europium brand, chemical structure
General characteristics
Europium is a silvery-white soft metal belonging to the group of lanthanides. Atomic number 63, atomic weight 151,96. Designated in the periodic table such as Eu. It was able to isolate from a mixture of rare earth elements on the eve of the twentieth century, the French chemist E. Demarse, who named it in honor of Europe. Today the industry gets it way vacuum recovery of oxide Eu2 O3 lanthanum, carbon or by electrolysis in molten EuCl3. Europium among lanthanoids is one of the most expensive metals per kilo which is dependent on the measure of the purity give from 800 to 2 thousand dollars.
Chemical properties
Europium in the air very quickly covered with oxide film. Keep it in the banks with liquid paraffin or kerosene. Valence +2; +3. From solutions of salts it displaces almost all the metals.
Physical properties
Melting point 826 °C, t° boil 1597 °C, the weight of 5.24 g/cm3. As a technology metal, it is easily processed — bent, rolled, drilled, milled, cut. At t° 1,8°K and a pressure of 80 GPA, europium becomes a superconductor.
| Physical quality Eu | |
|---|---|
| Atomic (molar) mass, g/mol | 151,9 |
| The degree of oxidation | 3, 2 |
| Density [g/cm3] | 5,24 |
| The melting temperature t°C | 826°C |
| The heat of fusion kJ/mol | n/a |
| The thermal conductivity K [W/(m·K)] | 13,9 |
| Heat of evaporation kJ/mol | 178 |
Application
Belongs to the group of non-ferrous metals are produced from these types of hire, as a circle, wire, sheet, etc. Derivatives of europium in nuclear boilers are neutron absorbers (Borat, hexaboride, oxide Eu2 O3). With iodine, chlorine and bromine, europium forms a photosensitive compound. Oxide Eu2 O3 is used in nuclear and hydrogen energy for the thermochemical splitting of water. Unstable europium-154 can be used as nuclear fuel. Europium ions are able to generate orange light with a wavelength of 0.61 micron, which serves as the basis for the creation of liquid and solid state lasers.
Buy at best price
LLC «AVEK global» is a company which sells non-ferrous, rare metals on the most favorable terms. In stock provided a range of products made from europium, and alloys thereof. For larger orders, additional conditions of supply depends on the price. At wholesale enjoy significant discounts. Our managers are always ready to provide expert assistance. A large range will not leave you without a choice. All products are certified, shipped promptly.