1,166 Matching Results

Search Results

Advanced search parameters have been applied.

Spectroscopy of Uranyl Salts in the Solid State

Description: From Introduction: "The interpretation of the fluorescence and absorption spectrum of the uranyl ion, indicated in this introduction, is based on the spectroscopic work of Nichols, Howes and co-workers (1914-1919), Dieke and van Heel (1925), Moerman and Kraak (1939), and Freymann and co-workers (1946-1948); on infrared studies (cf., Section 3 below) and Raman spectra; but most of all, on the work of Dieke, Duncan, and co-workers, carried out in 1943-1944 under the Manhattan District program. In the present chapter we will review briefly the earlier investigations in the field of uranyl salt and spectroscopy and give a somewhat more detailed summary of the results of Nichols and Howes and, particularly, of Dieke and co-workers."
Date: November 1953
Creator: Rabinowitch, Eugene
Partner: UNT Libraries Government Documents Department

Detection and removal of molten salts from molten aluminum alloys

Description: Molten salts are one source of inclusions and defects in aluminum ingots and cast shapes. A selective adsorption media was used to remove these inclusions and a device for detection of molten salts was tested. This set of experiments is described and the results are presented and analyzed.
Date: August 2, 1999
Creator: Butcher, K.; Smith, D.; Lin, C. L. & Aubrey, L.
Partner: UNT Libraries Government Documents Department

Electroformation of Uranium Hemispherical Shells

Description: This effort was directed at developing an electrochemical process for forming uniform and dendrite-free deposits of uranium from molten salts. This process is to be used for the electroformation of free-standing hemispherical shells of uranium for nuclear applications.
Date: November 1989
Creator: Marshall, S. L.; Redey, L.; Vandegrift, G. F. & Vissers, D. R.
Partner: UNT Libraries Government Documents Department

Comments on "Role of Anions (Tetrafluoroborate, Perchlorate) of Tetrabutylammonium Salts in Determining Solvation Effects Prevailing in Industrially Essential Solvents Probed by Conductance and FT-IR Spectra"

Description: Article commenting on "Role of Anions (tetrafluoroborate, perchlorate) of tetrabutylammonium salts in determining solvation effects prevailing in industrially essential solvents probed by conductance and FT-IR spectra.
Date: March 7, 2014
Creator: Acree, William E. (William Eugene)
Partner: UNT College of Arts and Sciences

Application of Concentration, Adsorption and pH in the Precipitation of the Metal Ions of Groups II and III

Description: In this thesis, the process involved in the precipitations and separations of the metal of Group II and Group III studied. Suggestions have also been offered whereby students can make an analysis without loosing metals in the initial precepitation.
Date: June 1937
Creator: Cockerell, Leone Doris
Partner: UNT Libraries


Description: The operation of the ORNL Volatility Pilot Plant for decontaminating and recovering uranium from molten-salt reactor fuels is discussed. A description of equipment, operating details, and performance of each system within the plant is contained. (C.J.G.)
Date: September 30, 1960
Creator: Miles, F W & Carr, W H
Partner: UNT Libraries Government Documents Department


Description: A list of fused-salt mixtures which are of importance in molten salt research is presented. The list is a revision and extension of the list published in ORNL CF-57-6-81. The liquidus temperatures given are believed to be within lO C of the correct values. (auth)
Date: June 12, 1958
Creator: Blakely, J.P.
Partner: UNT Libraries Government Documents Department


Description: Molten salts provide the basis of a new family of liquid fuel power reactors. The range of solubility of uranium and thorium compounds makes the system flexible, and allows the consideration of a variety of reactors. Suitable salt mixtures have meltirg points in the 85O to 95O deg F range and will probably prove to be sufficiently compatible with known alloys and to provide lorg-lived components, if the temperature is kept below 13OO deg F. Thus the salt systems naturally tend to operate in a temperature region suitable for modern steam plants and achieve these temperatures in unpressurized systems. Some economic and other considerations are made. (T.R.H.)
Date: October 10, 1957
Creator: McPherson, H.G.
Partner: UNT Libraries Government Documents Department

Thermodynamic Considerations in Metal-Metal Salt Interactions

Description: BS>The free energies of interaction between isolated metal atoms and the molten chloride of taat metal were calculated from thermodynamic considerations. Based on the values of these standard free energies of interaction, metal-salt systems can be classified into two categories. First are those systems exhibiting relatively weak interaction energies (less than 30 kcal); these include primarily the monoand divalent metals. In the second group are solutions with relatively strong interaction energies (greater than 40 kcal); these consist of the transition metals and the metals that are normally trivalent. Solutions of the first category appear to consist of strongly-solvated atoms whereas several of the systems in the second group are known to undergo chemical reaction to form a soluble lower-valent cation species in the melt. This classification of metalsalt systems in terms of weak or strong interactions is considered more reasonable than that based on a nonquantitative property such as subhalide formation. For example, it is shown that the interaction energies of systems containing known solid subhalides, e.g., Hg-- HgCl/sub 2/ and Bi- BiCl/sub 3/, are no larger and in many cases much less than those for other systems with no known subhalide. (auth)
Date: January 1, 1963
Creator: Topol, L. E.
Partner: UNT Libraries Government Documents Department