Chemical properties of molybdenum
2023-10-26
It is extremely difficult for molybdenum to lose seven or eight electrons. This determines the chemical properties of molybdenum is relatively stable. Molybdenum is stable in air or water at normal temperatures or at temperatures not too high. When molybdenum is heated in the air, the color begins to change from white (color) to dark gray; when the temperature rises to 520 ℃, molybdenum begins to be slowly oxidized to generate Mo2O3; when the temperature rises above 600 ℃, molybdenum is rapidly oxidized to MoO3. Molybdenum in water vapor heated to 700~800 ℃ began to generate MoO2, it will be further heated, molybdenum dioxide is continued to be oxidized to molybdenum trioxide. Molybdenum can spontaneously ignite in pure oxygen to form molybdenum trioxide. Molybdenum oxides have been reported in many cases, but many are reaction intermediates rather than thermodynamically stable phases. Very reliable with only nine kinds, its structure and transformation temperature.
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For the first time, China has obtained kilograms of molybdenum isotopes, breaking import dependence.
Every AI news, on October 26, according to the news of CNNC, recently, the Nuclear Physics and Chemistry Institute/Company of CNNC obtained the molybdenum -100 isotope with 99% kilogram abundance for the first time through independent research and development. This is the first major breakthrough in China's autonomous supply of key molybdenum isotope materials, changing the long-standing situation that molybdenum isotopes are completely dependent on imports, and marking that China has reached the world's leading level in the field of high abundance stable isotope research, become one of the few countries in the world that can obtain molybdenum isotopes in bulk. (Daily Economic News)
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