CHEMISTRY SEMI-ANNUAL SUMMARY RESEARCH REPORT FOR JANUARY-JUNE 1959

Technical Report · Sun Nov 01 00:00:00 EST 1959

OSTI ID:4198922

Physical and Inorganic Chemistry. Data on quantities of pure rare eanths separated during the period are listed and observatione on elution sequence are discussed. Solubilities of several rare earth EDTA species are tabulated along with other rare earth compounds. Stability constants of rare- earth chelates with various organic anions are tabulated and results of a study of sulfur isotope separation by ion exchange are given. In rare earth metallurgy, a hightemperature still for separation of pure yttrium metal is described. The apparatus is applicable to other rare earths. Results of rare earth physical property investigations are discussed. Mass spectrometric measurement of oxygen isotopes in a variety of compounds is described along with spectrometric studies of VOF/sub 3/ and SnH/sub 4/. Studies of chemical bond characteristics are described and abstracts of published papers on these investigations are included. Pyrometallurgy. Developmental activities on an apparatus to determine vapor pressures in metal systems involved in fuel reprocessing cycles are described. Analytical Chemistry. Analytical procedures developed for determination of oxygen in YF/sub 3/, Y, and Ti are described. A solvent extraction procedure developed for separating small quantities of Nb from Ta is outlined and abstracts of published papers on determination of vic- dioximes, Pa, complexes of Be and Cu, and on stability orders of transition metal complexes are included. Results of elution studies show that most divalent metals can be separated from trivalent metals in 20 to 50 minutes elution. Spectrochemistry. Description of rare earth spectra studies is given in which about 300 formerly misidentified lines were discovered and corrected. Other work included investigations on infrared spectroscopy and determination of gaseous elements in metals; for which papers were published. Radiochemistry. Continued study of C/sup 11/ produced in the C/sup 12/( gamma ,n)C/sup 11/ reaction is reported. Studies of activation analysis revealed that this method is oniy qualitative for carbon and nitrogen in metals. The Be/sup 9/( gamma ,2n) reaction is being studied to determine if other reactions give this product and to establish maximum cross sections. X-Ray Chemistry. Parameters obtained in a three dimensional refinement of x-ray data on copper, chlorine, and oxygen atoms are tabulated. In neutron-diffraction studies, published papers on sodium tungsten bronze structure, deuterium positions in lanthanum deuterides, structures of calcium dicarbide and uranium dicarbide, and phosphine are listed with abstracts. (For preceding period see ISC-1116.) (J.R.D.)

• Research Organization: Ames Lab., Ames, Iowa
• DOE Contract Number: W-7405-ENG-82
• NSA Number: NSA-14-011488
• OSTI ID: 4198922
• Report Number(s): IS-15
• Resource Relation: Other Information: Orig. Receipt Date: 31-DEC-60
• Country of Publication: United States
• Language: English

Related Subjects

CHEMISTRY
ANIONS
CHELATES
CHEMICAL REACTIONS
EDTA
FLUORIDES
HIGH TEMPERATURE
ION EXCHANGE
ISOTOPE SEPARATION
LABORATORY EQUIPMENT
MASS SPECTROMETERS
MEASURED VALUES
METALLURGY
ORGANIC COMPOUNDS
OXYGEN ISOTOPES
SEPARATION PROCESSES
SOLUBILITY
STABILITY
SULFUR ISOTOPES
TABLES
TIN HYDRIDES
USES
VANADIUM COMPOUNDS
YTTRIUM