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Redox reactions involving chromium, plutonium, and manganese in soils

Description: Plutonium speciation in soils is discussed. Chromium was selected as a model for studying soil Pu. Similarities between Cr and Pu are pointed out, and a hypotheses concerning Pu speciation in soils is presented. Findings from Cr oxidation studies that may be relevant to the problem of Pu oxidation in soils are discussed. (JGB)
Date: January 1, 1979
Creator: Amacher, M.C. & Baker, D.E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts

Description: Copper and cobalt are the key elements in syngas conversion catalyst systems used for higher alcohol synthesis. Their proximity and synergy sensitively control the selectivity and efficiency of the process. It is believed that their outer electronic charge distribution which is responsible for their electrical and magnetic properties might be governing their catalytic properties also. To examine the correlation between catalytic and magnetic properties, a series of copper cobalt catalysts (Co/C… more
Date: January 14, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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High-temperature oxidation and corrosion of materials program

Description: Research progress is reported in the behavior of metals and alloys in gas mixtures at high temperature, corrosion mechanisms in complex environments of low oxidizing potential, hot corrosion of nickel-base alloys at intermediate temperatures, corrosion of solid sulfate deposits, adherence of Al/sub 2/O/sub 3/ oxide films, oxidation behavior of a two-phase alloy Fe-44% Cu, and formation of subscales of varying composition. (FS)
Date: March 1, 1980
Creator: Whittle, D.P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts

Description: The primary objective of the project is to examine the relations between the catalytic and magnetic properties of the copper-cobalt higher alcohol synthesis catalysts. We have undertaken to investigate the magnetic character by studying the Nuclear Quadrupole resonance of copper and (Zerofield) Nuclear Magnetic Resonance of cobalt in copper cobalt catalysts.
Date: December 17, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts

Description: The primary objective of the project is to examine the relations between the catalytic and magnetic properties of the copper-cobalt higher alcohol synthesis catalysts. We have undertaken to investigate the magnetic character by studying the Nuclear Quadrupole resonance of copper and (Zerofield) Nuclear Magnetic Resonance of cobalt in copper cobalt catalysts.
Date: January 14, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Combined electrochemical/surface science investigations of Pt/Cr alloy electrodes

Description: Chromium addition improves the performance of carbon-supported Pt electrodes for oxygen reduction in phosphoric acid fuel cells. To clarify the role of chromium and its chemical nature at the electrode surface, we have performed a combined electrochemical/surface science investigation of a series of bulk Pt/sub x/Cr/sub (1-x)/ alloys (0 less than or equal to x less than or equal to 1). In this paper we report the surface characterization of the starting electrodes by XPS, electrochemical result… more
Date: January 1, 1985
Creator: Daube, K. A.; Paffett, M. T.; Gottesfeld, S. & Campbell, C. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High temperature fuel cell research and development. Final technical status report, 1 March 1979-31 March 1980. [Molten carbonate fuel cells]

Description: The objective of the program has been to evaluate potential materials for their chemical and physical stability in molten carbonate fuel cell electrolyte. Eleven powdered candidate materials were selected based on previous physical and chemical stability tests at elevated temperatures on solid materials and/or their thermodynamic stability with respect to proposed degradation reactions. The eleven candidate materials, plus gamma lithium aluminate, were characterized prior to corrosion testing u… more
Date: May 1, 1980
Creator: Lessing, P.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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METALLURGY DIVISION ANNUAL REPORT FOR 1961

Description: 8 < 8 7 8 7 < 5 8 6 ; : 9: 2 8 9 9 ; ; < 9 : 9 : 8 8 I of transformation and fusion, of U and U- fissium alloys were completed during the year. Data are also included on cladding penetration by molten U-fissium alloys and molten Pu fuel. Irradiation studies of U-fissium and Ufissium-Zr alloys were conducted. Progress is reported on the development of methods and equipment for remote refabrication of EBR-II fuel. Development and Fabrication of EBR-I Core IV Fuel Elements. A program to investigat… more
Date: October 31, 1962
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Development, characterization and evaluation of materials for open-cycle MHD. Quarterly report for the period ending December 1980

Description: The development and fabrication is continuing on a graded composite electrode with a refractory HfO/sub 2/-Re/sub x/O/sub y/ surface and a HfO/sub 2/-RE/sub x/O/sub y/-In/sub 2/O/sub 3/ current leadout for testing. The electrical conductivity of some oxide current leadouts were measured, and some general conclusions made regarding effects of composition. Also measured was the electrical conductivity of some yttrium chromites doped with Mg and Ca. The characterization and evaluation of Pt-coated… more
Date: January 1, 1982
Creator: Bates, J.L. & Marchant, D.D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Catalysis studies

Description: The New Research Initiatives Program (NRIP) project on catalysis in Los Alamos Scientific Laboratory (LASL) Group CMB-8 has made significant progress towards performing the first basic in situ experimental studies of heterogeneous catalysis on solid compound surfaces in a LEED-Auger system. To further understand the surface crystallography of a possible catalyst compound, LEED-Auger measurements were made on UO/sub 2/(approximately 100) vicinal surfaces. These (approximately 100) vicinal surfac… more
Date: November 1, 1977
Creator: Taylor, T. N. & Ellis, W. P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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DETERMINATIONS OF THE KINETICS AND MECHANISMS OF DEBORONIZATION AT 1135 C

Description: The mechanisms and kinetics of the loss of boron during heating at 1135 deg C under various dynamic environments were determined from powder compacts of 5 wt% elemental boron dispersed in matrices of Fe, Cr, Ni, Si, Fe/sub 2/O/sub 3/, Cr/sub 2/O/sub 3/, NiO, and SiO/sub 2/, compacts of austenitic stainless steel alloy powder containing 0.25 wt% boron, and wrought specimens of 0.13 wt% boron-- stainless steel alloy. The compacts containing 5 wt% boron were heat treated in vacuum, highpurity argo… more
Date: September 15, 1961
Creator: Cherubini, J.H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ceramic coatings on diesel engine components. Period covered: January 1979-August 1979

Description: Diesel engines with imporved thermal efficiency and fuel economy or flexibility will be required to meet automotive energy conservation goals. These goals can be met by minimizing engine heat loss to the coolant, i.e., by the use of a thermal insulating barrier on the interior surfaces of the combustion space. The development and testing of ceramic coatings for diesel engine components are discussed. These coatings include oxides of Al, Cr, Zr, Mg, Si, Ti, and Ca, and Mo and Ch carbides. Data o… more
Date: October 1, 1979
Creator: Kvernes, I & Lillerud, K P
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts

Description: The primary objective of the project is to investigate the magnetic nature of the higher alcohol synthesis catalyst-Cu/Co supported on specific supports: chromia and titania with and without an alkali metal promoter, and examine the relations between catalytic and magnetic properties.
Date: September 14, 1990
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Flow of particle suspensions through porous media

Description: A new attempt is made to study the mechanisms of particle invasions into porous media. The following subjects are described: A critical survey of the literature indicating that the mechanism of particle invasions is not known in sufficient detail. The pros and cons of existing particle measuring devices are briefly described. Results from a new laboratory study on particle characterizations are given. The results of the laboratory studies on the flow of particle suspensions through porous media… more
Date: June 22, 1982
Creator: Vetter, O.J.; Kandarpa, V. & Harouaka, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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PROCESSING OF POWER REACTOR FUELS. Fifteenth Quarterly Progress Report, April 1-July 1, 1961

Description: The results of experiments in support of an electrolytic dissolution process for fuel elements clad in stainiess steel or zirconium are given. The rate of disintegration of Zircaloy-2 anodes in nitric acid did not vary with acid concentration. Nitric oxide, formaldehyde, and process solvent were found effective in reducing the corrosion of stainiess steel equipment that was caused by the chromate present in acid solutions containing d ssolved stainless steel. Means were developed to improve the… more
Date: September 1, 1961
Creator: Owen, J.H. comp.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts

Description: During this period, we focused our attention in analyzing the magnetic nature of the extensively used trimetallic catalyst system Cu-Co-Cr for the production of higher alcohols. We believe that there could be some correspondence between the catalytic and magnetic behaviors of the transition metal catalyst systems. Both the morphology and metallic charge distribution of the particles are know to govern the catalytic as well as the magnetic properties of the system. Based on this concept, we have… more
Date: April 15, 1992
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Methanol and methyl fuel catalysts. Final technical report, September 1980-August 1983

Description: Copper-based catalysts for alcohol synthesis were prepared, tested for catalytic activity and selectivity, and characterized. These catalysts include Cu/ZnO, Cu/Co/ZnO, Cu/Co/Cr/sub 2/O/sub 3/, Cu/Co/Cr/sub 2/O/sub 3//K/sub 2/O, and Cu/ZnO/KOH. The chromia-containing catalysts exhibited a low activity and selectivity, while the Cu/ZnO catalyst was verified to be a very active and selective methanol synthesis catalyst. Cobalt imparted a methanation function to the catalysts, while potassium supp… more
Date: December 1, 1983
Creator: Klier, K.; Herman, R.G. & Simmons, G.W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts

Description: The primary concern of the study during this period has been to examine the origin and basis of the several nonconforming NMR lines reported in our earlier study. Previous studies by earlier investigators indicate that (a) the product distribution in the conversion of synthesis gas to liquid fuels is dependant on the copper/cobalt ratio and (b) that the catalytic results reported by different groups of investigators using the IFP prescription (4) are widely divergent. These observations prompte… more
Date: April 4, 1991
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effects of alternate fuels. Report No. 2. Analysis of basic refractories degraded by residual oil combustion products

Description: Industrial conversion in the U.S. to alternate fuels from natural gas is presently under way and will accelerate rapidly as a result of gas curtailments and National policy considerations. Currently the prime alternate fuels are distillate and residual oils and coal. Conversion to residual oils or coal for high-temperature process heat applications is anticipated to result in accelerated refractory and insulation corrosion and degradation due to reactions between fuel impurities and the ceramic… more
Date: February 1, 1978
Creator: Wei, G. C. & Tennery, V. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Two-dimensional neutron diffraction of YFe/sub 2/O/sub 4/ and CoCr/sub 2/O/sub 4/

Description: A new wide-angle neutron diffraction instrument has been used to study CoCr/sub 2/O/sub 4/ and YFe/sub 2/O/sub 4/. The instrument is capable of measuring the scattered intensity over a wide region of reciprocal space in a short time, and this feature was used to measure the magnetic diffraction pattern of these materials at temperatures below the magnetic ordering temperature. 9 refs., 3 figs.
Date: 1986~
Creator: Funahashi, S.; Morii, Y. & Child, H.R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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High temperature materials for radioactive waste incineration and vitrification. Revision 1

Description: Incineration or vitrification of radioactive waste subjects equipment to alkaline or acidic fluxing, oxidation, sulfidation, carburization, and thermal shock. It is necessary to select appropriate materials of construction and control operating conditions to avoid rapid equipment failure. Nickel- and cobalt-based alloys with high chromium or aluminum content and aluminum oxide/chromium oxide refractories with high chromium oxide content have provided the best service in pilot-scale melter tests… more
Date: January 1, 1986
Creator: Bickford, D F; Ondrejcin, R S & Salley, L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Sodium ionization detector and sensor

Description: Work conducted on a basic technology development effort with the Westinghouse Sodium Ionization Detector (SID) sensor is reported. Included are results obtained for three task areas: (1) On-line operational response testing - in-situ calibration techniques; (2) Performance-reliability characteristics of aged filaments; and (3) Evaluation of chemical interference effects. The results showed that a calibrator filament coated with a sodium compound, when activated, does supply the necessary sodium… more
Date: May 8, 1979
Creator: Hrizo, J. & Bauerle, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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