Periodic system first Ι Ι Ι clan subgroup lanthanides, a rare earth element. Atomic number 58. Stable isotope: 136, 138, 140, 138. Grey metal, malleable. Density: tetragonal crystal 6.9, 6.7 cubic crystal. Melting point 799 ℃, boiling point of 3426 ℃.
Ce is a kind of lively silver metal, powder in easy spontaneous combustion air, soluble in acid. Cerium name comes from the English name of the asteroid Ceres. Content of cerium in the earth's crust was about 0.0046%, the highest of rare earth elements in abundance. Cerium metal mainly for reducing agent.
The main purpose
Used as a reducing agent and catalyst. Used as alloy additive, and for the production of cerium salt and so on, also used in medicine, leather, glass, textile and other industries. Cerium as a catalyst, electrode arc, special glass, etc. Cerium alloy heat resistance, can be used to make the jet propeller parts.
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