- Uranium tetrachloride
Name = Uranium tetrachloride
ImageFile = UCl4.jpg
ImageName = Uranium Tetrachloride
IUPACName = Tetrachlorouranium
OtherNames = Uranium (IV) Chloride
Section1 = Chembox Identifiers
CASNo = 10026-10-5
Section2 = Chembox Properties
Formula = UCl4
MolarMass = 379.84 g/mol
MeltingPt = 590°C
BoilingPt = 791°C
Section3 = Chembox Structure
CrystalStruct = Octahedral
Uranium tetrachloride (UCl4) is a dark green compound of
uranium. Uranium metal was first isolated (1841) by Eugène-Melchior Péligotby the reduction of uranium tetrachloride with potassium. Commercially uranium tetrachloride is produced by the reaction of carbon tetrachloridewith pure uranium dioxideUO2 at 370°C. It is radioactiveand is soluble in water.
Uranium tetrachloride is used as feed in the electromagnetic
isotope separation(EMIS) process of uranium enrichment. Beginning in 1944, the Oak Ridge Y-12 Plant converted UO3 to UCl4 feed for the for Ernest O. Lawrence’s Alpha Calutrons. Its major benefit being the uranium tetrachloride used in the calutrons is not as corrosive as the uranium hexafluorideused in most other enrichment technologies This process was abandoned in the 1950s. In the 1980s, however, Iraqunexpectedly revived this option as part of its nuclear weapons program. In the enrichment process, uranium tetrachloride is ionized into a uranium plasma.The uranium ions are then accelerated and passed through a strong magnetic field. After traveling along half of a circle the beam is split into a region nearer the outside wall which is depleted and a region nearer the inside wall which is enriched in U-235. The large amounts of energy required in maintaining the strong magnetic fields as well as the low recovery rates of the uranium feed material and slower more inconvenient facility operation make this an unlikely choice for large scale enrichment plants.
Work is being done in the use of molten uranium chloride-alkali chloride mixtures as reactor fuels in
molten salt reactors. Uranium tetrachloride melts dissolved in a lithium chloride-potassium chloride eutectic have also be explored as a means to recover actinidesfrom irradiated nuclear fuels through pyrochemical nuclear reprocessing.
* Reaction of chlorine and uranium tetrachloride in the fused lithium chloride-potassium chloride eutectic, Donald R. Olander, J. L. Camahort, Lawrence Radiation Laboratory and University of California, Berkeley, California
* The Militarily Critical Technologies List (MCTL),Part II: Weapons of Mass Destruction Technologies, U.S. Department of Defense, updated July 2003.
Wikimedia Foundation. 2010.
Look at other dictionaries:
Uranium — (pronEng|jʊˈreɪniəm) is a silvery gray metallic chemical element in the actinide series of the periodic table that has the symbol U and atomic number 92. It has 92 protons and 92 electrons, 6 of them valence electrons. It can have between 141 and … Wikipedia
uranium processing — Introduction preparation of the ore for use in various products. Uranium (U), although very dense (19.1 grams per cubic centimetre), is a relatively weak, nonrefractory metal. Indeed, the metallic properties of uranium appear to be… … Universalium
uranium — /yoo ray nee euhm/, n. Chem. a white, lustrous, radioactive, metallic element, occurring in pitchblende, and having compounds that are used in photography and in coloring glass. The 235 isotope is used in atomic and hydrogen bombs and as a fuel… … Universalium
Uranium(III) chloride — chembox new ImageFile = Uranium(III) chloride 3D polyhedra.png IUPACName = Uranium(III) chloride OtherNames = Uranium chloride, Uranium trichloride Section1 = Chembox Identifiers Abbreviations = CASNo = 10025 93 1 EINECS = PubChem = SMILES =… … Wikipedia
Uranium trioxide — IUPAC name Uranium trioxide Uranium(VI) oxide … Wikipedia
Tétrachlorure d'uranium — U4+& … Wikipédia en Français
Actinide — The atomic bomb dropped on Nagasaki had a plutonium charge. The actinide or actinoid (IUPAC nomenclature) series encompasses the 15 metallic chemical elements with atomic numbers from 89 to 103, actinium thro … Wikipedia
Calutron — A Calutron was a mass spectrometer used for separating the isotopes of uranium developed by Ernest O. Lawrence [ cite web|url=http://www.lbl.gov/Science Articles/Research Review/Magazine/1981/81fepi2.htm |title=Lawrence and His Laborator… … Wikipedia
Organouranium chemistry — Uranocene Organouranium chemistry is the science exploring the properties, structure and reactivity of organouranium compounds, which are organometallic compounds containing a carbon to uranium chemical bond. The field is of some importance to … Wikipedia
10026-10-5 — Tétrachlorure d uranium tétrachlorure d uranium tétrachlorure d uranium Général Nom IUPAC tetrachloro uranium … Wikipédia en Français