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Supporting information for Abraham model correlations for solute partitioning into o-xylene, m-xylene and p-xylene from both water and the gas phase

Description: This document includes supporting information and figures for an article on the Abraham model correlations for solute partitioning into o-xylene, m-xylene and p-xylene from both water and the gas phase.
Date: September 2011
Creator: Stephens, Timothy W.; De la Rosa, Nohelli E.; Saifullah, Mariam; Ye, Shulin; Quay, Amanda N.; Chou, Vicky et al.
Partner: UNT College of Arts and Sciences

Infrared Analysis of n-Hexadecafluoroheptane and Hexadecafluorodimethylcyclohexane

Description: Summary: "By use of infrared spectroscopy come of the impurities in n-hexadecafluoroheptane and hexadecafluorodimethylcyclohexane have been identified and accurate specification analyses have been devised for measuring these impurities. These infrared analytical methods were used as an aid in setting acceptance specifications on the materials and for determining whether production materials met specifications."
Date: 1945
Creator: Williams, Van Zandt & Johnson, James L.
Partner: UNT Libraries Government Documents Department

Abraham model correlations for solute partitioning into o-xylene, m-xylene and p-xylene from both water and the gas phase

Description: Article on Abraham model correlations for solute partitioning into o-xylene, m-xylene and p-xylene from both water and the gas phase.
Date: September 2011
Creator: Stephens, Timothy W.; De la Rosa, Nohelli E.; Saifullah, Mariam; Ye, Shulin; Chou, Vicky; Quay, Amanda N. et al.
Partner: UNT College of Arts and Sciences

Amine Extraction of Plutonium From Nitric Acid Solutions Loading and Stripping Experiments

Description: Information is presented on a suitable amine processing system for plutonium nitrate. Experiments with concentrated plutonium nitrate solutions show that trilaurylamine (TLA) - xylene solvent systems did not form a second organic phase. Experiments are also reported with tri-noctylamine (TnOA)-xylene and TLA-Amsco - octyl alcohol. Two organic phases appear in both these systems at high plutonium nitrate concentrations. Data are tabulated from loading and stripping experiments. (J.R.D.)
Date: January 19, 1961
Creator: Wilson, A. S.
Partner: UNT Libraries Government Documents Department


Description: A manual for Operating several codes for an IBM-704 to calculate the pulse-heat response functions for gamma-ray scintiliation counters is presented. Using . the Monte Carlo method of computation, the codes will calculate the pulse-heat response function of xylene, Csl, or Nal counters of various geometrical configurations with cylindrical symmetry. Various monoenergetic source configurations are possible with a maximum source energy of 10.22 Mev. (auth)
Date: May 19, 1960
Creator: Zerby, C D & Moran, H S
Partner: UNT Libraries Government Documents Department

Characterization of Aprotic Solutes and Solvents using Abraham Model Correlations

Description: Experimental data were obtained for the computation of mole fraction solubilities of three dichloronitrobenzenes in organic solvents at 25oC, and solubility ratios were obtained from this data. Abraham model equations were developed for solutes in tributyl phosphate that describe experimental values to within 0.15 log units, and correlations were made to describe solute partitioning in systems that contain either "wet" or "dry" tributyl phosphate. Abraham model correlations have also been developed for solute transfer into anhydrous diisopropyl ether, and these correlations fit in well with those for other ethers. Abraham correlations for the solvation of enthalpy have been derived from experimental and literature data for mesitylene, p-xylene, chlorobenzene, and 1,2-dichlorobenzene at 298.15 K. In addition, the enthalpy contribution of hydrogen bonding between these solutes and acidic solvents were predicted by these correlations and were in agreement with an established method. Residual plots corresponding to Abraham models developed in all of these studies were analyzed for trends in error between experimental and calculated values.
Date: December 2016
Creator: Brumfield, Michela Lynne
Partner: UNT Libraries

The Radiolysis of the Xylene Isomers and Ethylbenzene

Description: The G-values for the formation of H/sub 2/ and CH/sub 4/ in the Co/sup 60/ gamma radiolysis of the xylene isomers and ethylbenzene were compared. The presence of iodine does not affect G/sub H2/, but reduces G/sub CH4/ a limiting value. For p-xylene, G/sub G2/ and the unscavengeable CH/sub 4/ yield are independent of temperature from 20 to 110 deg C, whereas the total CH/sub 4/ yield increases six-fold over this range. The H/sub 2/ and CH/sub 4/ yields are greatiy reduced in the solid state, and in the liquids state benzene shows a protective effect on the yields of both gases. The formation of CH/sub 4/ and C/ sub 2/-hydrocarbons was compared with the C/sub 6-/ and C/sub 7-/products for p- xylene and ethylbenzene, and isomerization is shown to occur to a negligible extent. The production of high-molecular-weight products was measured for the xylenes, and is independent of dose rate and temperature for liquid p-xylene, but is decreased in the solid state. The results are qualitatively consistent with the reactions of radicals and excited molecules. (auth)
Date: January 1, 1962
Creator: Verdin, D.
Partner: UNT Libraries Government Documents Department

Metal loaded poly-p-xylene

Description: Inertial confinement fusion target designs frequently require hydrocarbon polymer coatings loaded with varying amounts of high atomic number materials, typically metals. In addition to the usual requirements on thickness uniformity and surface finish, the metal loading must be dispersed in the polymer matrix on a submicron scale. The common means of obtaining such coatings for laser fusion targets is by glow discharge polymerization of an appropriate organometallic monomer starting material. Particle beam fusion targets, on the other hand, have utilized polymer coatings obtained by the pyrolytic vapor deposition of p-xylene. With this process, one may obtain halogenated poly-p-xylene by synthesis of the required halogenated dimer. Alternatively, we are developing a technique to incorporate metals into poly-p-xylene, essentially by combining the reactive monomer vapor, downstream from the pyrolysis region, with metal vapor from a resistively-heated source in a vacuum chamber. In addition to allowing the possibility of codeposition with any material which can be deposited by thermal evaporation, the technique allows for graded composition/density within the coating. In principle, one can obtain films with metal loadings continuously variable from that of the poly-p-xylene matrix through solid metal density.
Date: January 1, 1980
Creator: Bieg, K.W.
Partner: UNT Libraries Government Documents Department

Laser-fusion target fabrication: application of organic coatings to metallic and nonmetallic micropellets by the glow-discharge polymerization of p-xylene

Description: Laser-fusion targets require thin, uniform organic-film coatings. A coating technique involving glow-discharge polymerization is described for applying highly adherent, extremely uniform, thin films of a high-temperature polymer to a variety of microsubstrates. Polymeric coatings as thick as 10 ..mu..m have been successfully deposited on hollow, spherical, 40- to 250-..mu..m-diam micropellets of glass, metal-coated glass, and nickel/manganese alloy. Experimental yields of coatings of a quality acceptable for laser-fusion targets are typically greater than 90 percent.
Date: January 1, 1976
Creator: Simonsic, G. A.
Partner: UNT Libraries Government Documents Department


Description: ABS>Progress is reported in the following studies: the autoradiographic mapping of the deposition of Ca/sup 45/ in cortical bone in dogs; measurement of fission-product activity present in soil; factors affecting the performance of ionization chambers; calibration tests on the dibutyl phosphate method of isolating Th/sup 228/ from solutions of ashed bone; microradiographic demonstration of changes in mineral density in dog bones; radiometric determination of radon in bone and in the atmosphere; changes produced in xylene by exposure to massive doses of Co/sup 60/ gamma radiation; applications of the human spectrometer in in vivo measurements of Cs/sup 137/ build-up in humans; determinations of Cs/sup 137/ atmospheric content as a function of time; development of a tracer method using K/sup 42/ for measurement of exchangeable potassium in humans; determinations of the radium body burdens in fornner dial painters; and the atmospheric diffusion of stack particles. A meteorological model towing tank is described which was constructed as an alternative to a wind tunnel for model studies of atmospheric turbulent diffusion. Preliminary studies employing the apparatus are described. (For preceding period see ANL-5679.) (C.H.)
Date: July 1, 1957
Partner: UNT Libraries Government Documents Department


Description: Batch extraction scouting tests were performed to establish comparisons of distribution coefficients for uranium, thorium, fission product, and/or plutonium in systems involving several classes of organic phosphorus compounds (diluted in Amsco 125-82 and/or xylene) and aqueous nitrate or nitric acid solutions. Results have substantiated previous conclusions which suggested (1) that the branched secondary alkylphosphates and alkylphenylphosphonates would generally afford uranium separation factors (from thorium and fission products) superior to those obtainable by tributylphosphate (TBP, a normal alkylphosphate); and (2) that the phenylphosphonates would afford reasonably higher extractability of uranium. Preliminary data from irradiation tests with di-sec-butyl phenylphosphonate also support a previous conclusion (3) that the phenyl group affords greater radiation stability of the organo-phosphorus compounds. Since the compound di-sec-butyl phenylphosphonate (DSBPP) effectively combines the above advantages (1), (2), and (3), it has received especial attention as a potential practical competitor for TBP as a recovery process extractant. Results of preliminary counter-current extraction tests
Date: June 1, 1959
Creator: Gresky, A.T. & Mansfield, R.G.
Partner: UNT Libraries Government Documents Department

Continuous biodegradation of waste xylene

Description: Use of selected microorganisms for the degradation and/or detoxification of hazardous organic compounds is gaining wide acceptance as an alternative waste treatment technology. The INEL Biotechnology Unit is developing the technology for the in-plant treatment of waste industrial solvents. The work centers around the use of microorganisms specially selected for their ability to degrade common industrial solvents such as benzene, toluene, xylene, etc. Because these waste solvents are often contaminated with other materials (heavy metals, water, detergents, etc.) they are difficult and expensive to dispose and many times are not economical to recover through recycling. Even if the disposal option is used, the generator is still faced with continued liability in the event of mishandling or improper disposal of the waste. Biological treatments offers the option of reducing these solvents into harmless by-products provided that both the requisite microorganisms and the proper processing technology are successfully brought together. Work on the optimization of a bioreactor process for the degradation of xylene will be discussed. 15 figs., 7 refs.
Date: January 1, 1990
Creator: Wolfram, J.H.; Rogers, R.D.; Higdem, D.M. & Nowers, D.A.
Partner: UNT Libraries Government Documents Department


Description: Progress is reported in the following studies: effects of various doses of gamma radiation on the light absorbance of aerated and air-free samples of xylenes the design of a light piping system for a scintillation spectrometer; the development of a simple source of monoenergetic fast neutrons and the possibility of using a spherical moderator to produce a roughly monochromatic distribution of neutrons from a source of monochromatic neutrons of a higher energy; calculation of the body retention and elimination of Ra/sup 228/ and Ra/sup 224/ following a single injection of Th/sup 232/; the analysis of gamma-ray spectra by the method of least squares; application of a microradiographic technique in determinations of the mineral density of human bones at various ages and density values for old bone and new growth in bones from man, dogs, mice, cows, rabbits, and rats; the bone deposition of Ca/sup 45/ following injection in dogs; determination of the natural Ra/sup 226/ content of 200 water samples from Illinois municipal water supplies; attempts to estimate the fraction of the stratospheric Sr/sup 90/ in the total Sr/sup 90/ transported to the ground by rain by observing variations in the relative amounts of Sr/sup 89/, Sr/sup 90/, and Ba/sup 140/ in water from a series of rainfalls; the monitoring of the atmosphere for fall-outs design of a transportable gamma-ray spectrometers soil temperature studies; the operation of an automatic data processing system for use with the soil temperature measurementss measurements of atmospheric radon; wind-tunnel studies on dispersal patterns of stack gases; and application of a meteorological model towing tank for studies of turbulent diffusion in the atmosphere. A list is included of articles published and accepted for publication during the period. (For preceding period see AHL-5755.) (C.H.)
Date: February 1, 1958
Partner: UNT Libraries Government Documents Department