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Pysico-chemical properties of hydrophobic ionic liquids containing1-octylpyridinium, 1-octyl-2-methylpyridinium or1-octyl-4-methylpyridinium cations

Description: This paper reports synthesis of some ionic liquids based on cations 1-octylpyridinium, 1-octyl-2-methylpyridinium or 1-octyl-4-methylpyridinium and anions dicyanamide [N(CN)2]-, bis(trifluoromethylsulfonyl)imide [Tf2N]-, bis(pentafluoroethylsulfonyl)imide [BETI]-, trifluoromethyl sulfonate [TfO]-, nonafluorobutyl sulfonate [NfO]-, tetrafluoroborate [BF4]-, trifluorophenylborate [BF3Ph]- or hexafluoroarsenate [AsF6]-. Melting points, decomposition temperatures, densities, mutual solubilities wit… more
Date: September 15, 2006
Creator: Papaiconomou, Nicolas; Salminen, Justin; Lee, Jong-Min & Prausnitz, John M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Substituent Effects on Diazeniumdiolate Anions: an AB Initio and DFT Study

Description: Nitroglycerin and isoamyl nitrate have been used as nitrovasodilators since the nineteeth century. However, not until recently has it been known that these compounds were useful since they promoted the release of NO in the body. More recently, a new class of drugs, NO donors, has been developed. These include S-nitrosothiols (RSNO), sydnonimines, and nucleophilic NO adducts.
Date: December 1997
Creator: García, Samuel A. (Samuel Anthony)
Item Type: Refine your search to only Thesis or Dissertation
Partner: UNT Libraries
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Knock-on synthesis of tritopic calix[4]pyrrole host for enhanced anion interactions

Description: Author Manuscript version of an article reporting interactions of anionic guests with a tritopic peripherally functionalized conjugated calix[4]pyrrole host (1) prepared using a regioselective synthetic method.
Date: June 4, 2019
Creator: Webre, Whitney A.; D'Souza, Francis; Chahal, Mandeep K.; Labuta, Jan; Březina, Václav; Karr, Paul A. et al.
Item Type: Refine your search to only Article
Partner: UNT College of Science
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Anion Exchange of Neptunium in Nitrate Solutions

Description: Technical report. From Abstract : "The absorption and elution of the anionic nitrate complex of neptunium (IV) were studied with several anion exchange resins and under a wide variety of conditions." From Introduction : "The objective of this study was to provide a technical basis for selecting process conditions for the recovery of Np."
Date: December 1960
Creator: Burney, Glenn A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A New Anionic Solvent Extraction Technique

Description: From abstract: "The extraction of acids with long-chain amines is described. Preliminary results on the extraction of the amine salts of polonium, plutonium and uranium are given."
Date: July 17, 1952
Creator: Moore, F. L.; Kelley, M. T. & Susano, C. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Structural simulations of nanomaterials self-assembled from ionic macrocycles.

Description: Recent research at Sandia has discovered a new class of organic binary ionic solids with tunable optical, electronic, and photochemical properties. These nanomaterials, consisting of a novel class of organic binary ionic solids, are currently being developed at Sandia for applications in batteries, supercapacitors, and solar energy technologies. They are composed of self-assembled oligomeric arrays of very large anions and large cations, but their crucial internal arrangement is thus far unknow… more
Date: October 1, 2010
Creator: van Swol, Frank B. & Medforth, Craig John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Effect of Sulfate Anions on Crevice Corrosion in Alloy 22

Description: The electrochemical behavior of Alloy 22 was studied in 4 M NaCl, and 4 M NaCl with sulfate additions of 0.4 and 0.04 M between 45 and 105 C using Multiple Crevice Assembly (MCA) specimens. The susceptibility to localized corrosion was found to decrease in the presence of sulfate ions in solution.
Date: August 19, 2004
Creator: Ilevbare, Gabriel O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Minimum Hydrogen Peroxide Concentration Required for Precipitate Formation From 50 Per Cent Uranyl Salt Solutions

Description: This two page report discusses the processes followed and findings of an effort to estimate the minimum amount of hydrogen peroxide concentrations required for the formation of a precipitate in 50 percent solutions of uranyl nitrate and uranyl sulfate containing various concentrations of excess anion as acid. The report contains a table detailing the results.
Date: 1946
Creator: Livingston, Ralph
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Effect of Nitrite/Nitrate concentrations on Corrosivity of Washed Precipitate

Description: Cyclic polarization scans were performed using A-537 carbon steel in simulated washed precipitate solutions of various nitrite and nitrate concentrations. The results of this study indicate that nitrate is an aggressive anion in washed precipitate. Furthermore, a quantitative linear log-log relationship between the minimum effective nitrite concentration and the nitrate concentration was established for washed precipitate with other ions at their average compositions.
Date: March 28, 2001
Creator: Congdon, J. W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Project AN0115A Annual Report, 1977: Migration of Long-Lived Radioactive Processing Wastes in Selected Rocks

Description: Annual report of Argonne National Laboratory project ANO115A. This report discusses research to compare migration of radionuclides in scale models versus the Pu-Am disposal areas at Los Alamos Laboratory.
Date: 1978?
Creator: Fried, Sherman; Friedman, M. A.; Cohen, Donald; Hines, John & Strickert, Richard G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Metal-insulator transition by isovalent anion substitution in Ga1-xMnxAs: Implications to ferromagnetism

Description: We have investigated the effect of partial isovalent anion substitution in Ga1-xMnxAs on electrical transport and ferromagnetism. Substitution of only 2.4percent of As by P induces a metal-insulator transition at a constant Mn doping of x=0.046 while the replacement of 0.4 percent As with N results in the crossover from metal to insulator for x=0.037. This remarkable behavior is consistent with a scenario in which holes located within an impurity band are scattered by alloy disorder in the anio… more
Date: February 7, 2008
Creator: Stone, P. R.; Alberi, K.; Tardif, S. K. Z.; Beeman, J. W.; Yu, K. M.; Walukiewicz, W. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Structure and Dynamics of Negative Ions

Description: This report describes progress made during the final three-year grant period 1997-2000. During this period, we experimentally investigated the structure and dynamics of negative ions by detaching the outermost electron in controlled processes induced by photon-, electron- and heavy particle-impact. In this manner we studied, at a fundamental level, the role of electron correlation in the structure and dynamics of simple, few-particle atomic systems. Our measurements have provided sensitive test… more
Date: October 24, 2000
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Summary I - accelerator ion sources, fundamentals and diagnostics

Description: The 11th International Symposium on the Production and Neutralization of Negative Ions and Beams was held in Santa Fe, New Mexico on September 12-15, 2006 and was hosted by Los Alamos National Laboratory. This summary covers the first three oral sessions of the symposium.
Date: October 1, 2006
Creator: Moehs, Douglas P.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Measurements of Scattering Processes in Negative Ion- Atom Collisions

Description: The main research activity is to study various scattering processes which occur in H{sup -} collisions with atomic (specifically, noble gas and atomic hydrogen) targets in the intermediate energy region. These processes include: elastic scattering, single- and double-electron detachment, and target excitation/ionization.
Date: December 22, 2000
Creator: Kvale, T. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Chemical Processing of Pu238

Description: Technical report. From Abstract : "Plutonium (principally Pu238) was separated from neptunium, and both the plutonium and neptunium were purified from fission products and cations by a three-cycle anion exchange process."
Date: October 1962
Creator: Tetzlaff, Ralph N.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The effect of iodide and pH on the adsorption of mercury(II) to illite

Description: Effect of I{sup -} concentration on mobility of Hg(II) in clay suspensions was studied over an environmentally significant pH range. The addition of I{sup -} decreased the adsorption of Hg(II), except at very low (50 {mu}g/L) I{sup -} concentrations. In suspensions of greater I{sup -} concentration (1.5 and 50 mg/L). Hg(II) adsorption increased with pH, presumably due to formation of Hg-OH complexes; at low concentrations, Hg(II) adsorption decreased with pH, presumably due to competition from … more
Date: December 31, 1994
Creator: Hamilton, W. P.; Ghosh, M. M. & Turner, R. R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Selective Noncatalytic Reduction of NOx Using Ammonium Sulfate

Description: Article discusses how ammonium sulfate (AS) is of interest as an additive in stationary combustion plants for the simultaneous control of NOx (through selective noncatalytic reduction, SNCR) and deposition and corrosion (through sulfation of alkali chlorides). The results indicated that sulfur from ammonium sulfate is mainly released as SO3, even though SO2 is detected in increasing concentrations at temperatures above 1000 °C. This is the accepted manuscript version of the published article.
Date: July 15, 2021
Creator: Krum, Kristian R. K.; Jensen, Martin; Li, Songgeng; Norman, Thomas; Marshall, Paul; Wu, Hao et al.
Item Type: Refine your search to only Article
Partner: UNT College of Science
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