Search Results - "Netzel, D. A."

NMR Characterization of Size Exclusion Chromatographic Fractions from Asphalt by Netzel, D. A., Turner, T. F.

“…Size exclusion chromatography was used to separate an asphalt into nine fractions, and these fractions were then investigated by 1 H and 13 C NMR. From the…”
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NMR imaging studies of asphaltene precipitation in asphalts by Miknis, Francis P., Pauli, Adam T., Michon, Laurent C., Netzel, Daniel A.

“…Nuclear magnetic resonance (NMR) images were obtained on asphalts which were dissolved in toluene and titrated with iso-octane to the point of onset of…”
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NMR Determination of Carbon Aromatization during Hydrous Pyrolysis of Coals from the Mesaverde Group, Greater Green River Basin by Miknis, Francis P, Netzel, Daniel A, Surdam, Ronald C

“…Solid- and liquid-state 13C NMR measurements have been made on the residues and liquids produced during hydrous pyrolysis experiments conducted on Almond and…”
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CARBON-13 MOLECULAR STRUCTURE PARAMETERS OF RTFOT AGED ASPHALTS: THREE PROPOSED MECHANISMS FOR AROMATIZATION by Michon, Laurent, Netzel, Daniel A., Hanquet, Bernard, Martin, Didier, Planche, Jean-Pascal

“…The determination of average molecular structural parameters of asphalts represents an important step in describing their skeleton. Using a new method based…”
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Carbon-13 solid-state n.m.r. investigation of coke deposits on spent catalysts used in coal liquefaction by Netzel, Daniel A., Miknis, Francis P., Mitzel, Jennifer M., Zhang, Tiejun, Jacobs, Paul D., Haynes, Henry W.

“…Catalysts of the CoMo type were prepared on four different surface-modified alumina supports: (1) TiO 2-coated by impregnation, (2) ZrO 2-coated by…”
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Quantitation of carbon types using DEPT/QUAT NMR pulse sequences: application to fossil-fuel-derived oils by Netzel, Daniel A

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Chloride and Bromide Complexes of Nickel(II) in Aqueous Solution by Netzel, D. A, Droll, H. A

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NMR and GC/MS investigation of the saturate fractions from the Cerro Negro heavy petroleum crude by Netzel, Daniel A, Guffey, Frank D

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sp\1\-sp\H NMR study of the hydration kinetics of coal fly ash and spent oil shale by Netzel, D A, Turner |h J. P.

“…The large quantities of coal fly ash and the above ground retorting of oil shale result in vast amounts of solid by-products. If ever fully commercialized,…”
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Rate of intermolecular association of Asphalt Ridge tar sand bitumen after thermal dissociation by Netzel, Daniel A, Coover, Peggy T

“…It is known that reversible thermal cycling implies that intermolecular interactions of the types dipole-dipole or dipole-induced dipole, rather than a…”
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Effect of catalyst acidity on the hydrogen-donor content of a hydrotreated coal liquid by McCormick, Robert L, Haynes, Henry W, Netzel, Daniel A

“…Nine catalysts were used to hydrotreat a coal-derived distillate in a fixed bed reactor. These catalysts were prepared from a variety of different support…”
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1H NMR study of the hydration kinetics of coal fly ash and spent oil shale by Netzel, D.A, Turner, J.P

“…Hydrogen NMR spin–lattice relaxation times were measured as a function of time to determine the kinetics of hydration for the Dave Johnston and Laramie River…”
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Effect of Different Drying Methods on Coal Structure and Reactivity Toward Liquefaction by Miknis, Francis P, Netzel, Daniel A, Turner, Thomas F, Wallace, Jefferey C, Butcher, Clint H

“…Different methods of drying coal were investigated to determine if drying can be accomplished without altering the coal structure and reactivity toward…”
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A neutron activation method for soil removal measurements: A comparison of the reflectance method and the neutron activation method by Netzel, D. A., Stanley, C. W., Rathburn, D. W.

“…A nondestructive neutron activation analysis technique has been developed to determine the amt of particulate kaolinite clay soil removed from cotton fibers…”
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A 13C NMR and DSC Study of the Amorphous and Crystalline Phases in Asphalts by Michon, Laurent C., Netzel, Daniel A., Turner, Thomas F., Martin, Didier, Planche, Jean-Pascal

“…The amorphous and crystalline phases in asphalt have been identified and studied using low-temperature solid-state carbon-13 CP/MAS NMR and DSC techniques. The…”
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Use of 2,2-Dimethoxypropane and 1H NMR To Distinguish and Quantify the External and Internal Sorbed Water in Coals by Netzel, Daniel A, Turner, Thomas F, Miknis, Francis P, Wallace, Jeffrey C, Butcher, Clinton H, Mitzel, Jennifer M, Hurtubise, Robert J

“…Physisorbed and chemisorbed water in coal can be effectively removed by the use of 2,2-dimethoxypropane (DMP) which reacts with the water to form methanol and…”
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Synthesis of biological markers in fossil fuels. II: Synthesis and 13C NMR studies of substituted indans and tetralins by ADAMCZYK, M, WATT, D. S, NETZEL, D. A

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