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GC/MS characterization of condensable tars in the output stream of a stirred fixed-bed gasifier

Description: The output stream of the stirred fixed-bed gasifier at the Morgantown Energy Technology Center was sampled for total entrained material. A major portion of the entrained material, in addition to particles, is condensable tar that is subsequently removed from the process gas by wet scrubbing. Characterization of the entrained materials, specifically the tar, is important to establish contaminant levels and to evaluate performance of downstream cleanup units. Samples of tars were collected from t… more
Date: December 1, 1981
Creator: Lamey, S. C.; McCaskill, K. B. & Smith, R. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

/sup 1/H, /sup 19/F and /sup 11/B nuclear magnetic resonance characterization of BF/sub 3/:amine catalysts used in the cure of C fiber-epoxy prepregs

Description: The chemical composition of commercial BF/sub 3/:amine complexes are variable and contain BF/sub 4//sup -/ and BF/sub 3/(OH)/sup -/ salts together with other unidentified highly reactive species. The BF/sub 3/:amine complexes, which are susceptible to hydrolysis, also partially convert to the BF/sub 4//sup -/ salt (i.e. BF/sub 4//sup -/NH/sub 3//sup +/C/sub 2/H/sub 5/) upon heating. This salt formation is accelerated in dimethyl sulfoxide solution and in the presence of the epoxides that are pr… more
Date: December 1, 1983
Creator: Happe, J.A.; Morgan, R.J. & Walkup, C.M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Cyclooctatetraeneactinide(IV) bis-borohydrides

Description: In order to take advantage of the known volatility of actinide borohydride complexes, attempts were made to prepare half-sandwich borohydrides (RCOT)M(BH/sub 4/)/sub 2/, where COT is cyclooctatetraene and M is Th or U. The borohydrides were formed as complexes with THF solvent. Spectra and chemical reactions of these compounds were investigated. (DLC)
Date: December 1, 1979
Creator: Solar, J.P.; Streitwieser, A. Jr. & Edelstein, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Magnetic resonance studies of photo-induced electron transfer reactions

Description: During the period covered by this report research has been concerned with the application of Fourier Transform Electron Paramagnetic Resonance (FT EPR) in the study of photo-induced electron transfer reactions. Donor molecules used in this investigation have been various porphyrins, whereas quinones were used as acceptor molecules.
Date: December 1, 1990
Creator: van Willigen, H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analytical Chemistry Laboratory progress report for FY 1985

Description: The Analytical Chemistry Laboratory is a full-cost-recovery service center, with the primary mission of providing a broad range of technical support services to the scientific and engineering programs at ANL. In addition, ACL conducts a research program in analytical chemistry, works on instrumental and methods development, and provides analytical services for governmental, educational, and industrial organizations. The ACL handles a wide range of analytical problems, from routine standard anal… more
Date: December 1, 1985
Creator: Green, D. W.; Heinrich, R. R. & Jensen, K. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Enzymatic desulfurization of coal

Description: Our current efforts to develop clean coal technology emphasize the advantages of enzymatic desulfurization techniques and have specifically addressed the potential of using partially-purified extracellular microbial enzymes or commercially available enzymes. Our work is focused on the treatment of model'' organic sulfur compounds such as dibenzothiophene (DBT) and ethylphenylsulfide (EPS). Furthermore, we are designing experiments to facilitate the enzymatic process by means of a hydrated organ… more
Date: December 15, 1988
Creator: Marquis, J.K. (Boston Univ., MA (United States). School of Medicine) & Kitchell, J.P. (Holometrix, Inc., Cambridge, MA (United States))
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The thermodynamic properties of 2-aminobiphenyl (an intermediate in the carbazole/hydrogen reaction network)

Description: Catalytic hydrodenitrogenation (HDN) is a key step in upgrading processes for conversion of heavy petroleum, shale oil, tar sands, and the products of the liquefaction of coal to economically viable products. This research program provides accurate experimental thermochemical and thermophysical properties for key organic nitrogen-containing compounds present in the range of alternative feedstocks, and applies the experimental information to thermodynamic analyses of key HDN reaction networks. T… more
Date: December 1, 1990
Creator: Steele, W. V.; Chirico, R. D.; Knipmeyer, S. E. & Nguyen, A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Irreversible Adsorption of Phenolic Compounds by Activated Carbons

Description: Studies were undertaken to determine the reasons why phenolic sorbates can be difficult to remove and recover from activated carbons. The chemical properties of the sorbate and the adsorbent surface, and the influences of changes in the adsorption and desorption conditions were investigated. Comparison of isotherms established after different contact times or at different temperatures indicated that phenolic compounds react on carbon surfaces. The reaction rate is a strong function of temperatu… more
Date: December 1988
Creator: Grant, T. M. & King, C. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Analytical Chemistry Laboratory: Progress report for FY 1988

Description: The purpose of this report is to summarize the activities of the Analytical Chemistry Laboratory (ACL) at Argonne National Laboratory (ANL) for fiscal year 1988 (October 1987 through September 1988). The Analytical Chemistry Laboratory is a full-cost recovery service center, with the primary mission of providing a broad range of analytical chemistry support services to the scientific and engineering programs at ANL. In addition, the ACL conducts a research program in analytical chemistry, works… more
Date: December 1, 1988
Creator: Green, D. W.; Heinrich, R. R.; Graczyk, D. G.; Lindahl, P. C. & Erickson, M. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Thermal degradation of cellulose in alkali

Description: Biomass in an alkaline aqueous slurry can be liquefied by heat and pressure. Understanding the mechanisms of biomass liquefaction to improve the efficiency of converting biomass to useful products, particularly chemicals and synthetic fuels is discussed. To study the chemical mechanisms of this process, pure cellulose, the main component of biomass, was liquefied. The 78 cellulose liquefaction products that were identified by gas chromatography/mass spectrometry include polyols, furans, ketones… more
Date: December 1, 1980
Creator: Miller, R. K.; Molton, P. M. & Russell, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Water Resources Research Program: Pollution of Coastal Waters Off Chicago by Sinking Plumes From the Indiana Harbor Canal

Description: On March 2, 1977, during sinking-plume conditions, a portion of the water of the Indiana Harbor Canal (IHC) was injected with samarium and rhodamine-dye tags and a section of the IHC's surface was covered with simulated oily waste tagged with dysprosium. Water samples were taken downcurrent, over a 54-hr period, from a vessel and from the raw-water streams from the intakes at Chicago's South Water Filtration Plant (SWFP). Bottom currents and water temperatures were measured almost continuously … more
Date: December 1, 1977
Creator: Harrison, W.; McCown, D. L.; Raphaelian, L. A. & Saunders, K. D.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Catalysis and co-catalysis of bond cleavages in coal and coal analogs. Quarterly report, August 1, 1992--October 31, 1992

Description: The catalytic efficiency of 2-pyridone and 4-pyridone (tautomers of 2-hydroxy and 4-hydroxypyridine) for transfer hydrogenolysis of dinaphthyl ether in tetralin at 450 C was investigated. The effectiveness of 2-pyridone dropped when the reaction time was increased, suggesting that the catalyst is destroyed. Reaction of a compound with bromine in CCl{sub 4} yielded a rearrangement product with a minor amount of the cyclization product; in acetonitrile, only the rearrangement product is obtained.
Date: December 31, 1992
Creator: Miller, B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Lap shear strength of selected adhesives (epoxy, varnish, B-stage glass cloth) in liquid nitrogen and at room temperature

Description: The adhesives included several epoxy resins, a varnish, and a B-stage glass cloth (a partially cured resin in a fiberglass cloth matrix). Several parameters critical to bond strength were varied: adhesive and adherend differences, surface preparation, coupling agents, glass cloth, epoxy thickness, fillers, and bonding pressure and temperature. The highest lap shear strengths were obtained with the B-shear glass cloth at both liquid nitrogen and room temperatures with values of approximately 20 … more
Date: December 1, 1976
Creator: Froelich, K. J. & Fitzpatrick, C. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Effect of heat treatment temperature on binder thermal conductivities

Description: The effect of heat treatment on the thermal conductivities of a pitch and a polyfurfuryl alcohol binder residue was investigated. Graphites specially prepared with these two binders were used for the experiments. Measured thermal conductivities were treated in terms of a two-component system, and the binder thermal conductivities were calculated. Both binder residues showed increased thermal conductivity with increased heat treatment temperature. (auth)
Date: December 1, 1975
Creator: Wagner, P.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Enhanced safety in the storage of fissile materials. [Boron-loaded epoxy resin]

Description: An inexpensive boron-loaded liner of epoxy resin for fissile-material storage containers was developed that can be easily fabricated of readily available, low-cost materials. Computer calculations indicate reactivity will be reduced substantially if this neutron-absorbing liner is added to containers in a typical storage array. These calculations compare favorably with neutron-attenuation experiments with thermal and fission neutron spectra, and tests at the Fire Test Facility indicate the epox… more
Date: December 15, 1978
Creator: Williams, G. E. & Alvares, N. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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