Hydrogen bonding in asphaltenes and coal. Quarterly report, January 1--March 31, 1979

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In this study, upgraded coal liquids from a blend of 30 weight percent of SRC I with 70 weight percent of SRC II, as well as from SRC II, have been studied by IR and NMR techniques. The variation of structural parameters of the upgraded liquids has been determined as a function of reaction temperature and contact time in the catalytic hydroprocessing. The results indicate that along with the decrease in heteroatom contents, asphaltene content, aromatic content and a corresponding increase in aliphatic content, the hydrogen-bonded structure and phenolic OH content of the coal liquids drastically decrease with increase in ... continued below

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Li, N.C.; Tewari, K.C. & Hara, T. April 1, 1979.

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In this study, upgraded coal liquids from a blend of 30 weight percent of SRC I with 70 weight percent of SRC II, as well as from SRC II, have been studied by IR and NMR techniques. The variation of structural parameters of the upgraded liquids has been determined as a function of reaction temperature and contact time in the catalytic hydroprocessing. The results indicate that along with the decrease in heteroatom contents, asphaltene content, aromatic content and a corresponding increase in aliphatic content, the hydrogen-bonded structure and phenolic OH content of the coal liquids drastically decrease with increase in contact time and temperature. The disappearance of phenolic OH in upgrading process follows a first-order kinetics but no such dependence was observed in case of acidic NH.

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Dep. NTIS, PC A03/MF A01.

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  • Report No.: COO-0063-13
  • Grant Number: EY-76-S-02-0063
  • DOI: 10.2172/5983111 | External Link
  • Office of Scientific & Technical Information Report Number: 5983111
  • Archival Resource Key: ark:/67531/metadc1097770

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  • April 1, 1979

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  • Feb. 18, 2018, 3:59 p.m.

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  • March 28, 2018, 1:46 p.m.

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Li, N.C.; Tewari, K.C. & Hara, T. Hydrogen bonding in asphaltenes and coal. Quarterly report, January 1--March 31, 1979, report, April 1, 1979; United States. (digital.library.unt.edu/ark:/67531/metadc1097770/: accessed July 16, 2018), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.