✦ LIBER ✦

Extents and models of adduction of hydrocarbon and nitrogen-containing solvents in coal liquefaction

✍ Scribed by Robert I. McNeil; Donald C. Young; Donald C. Cronauer

Publisher: Elsevier Science
Year: 1983
Tongue: English
Weight: 952 KB
Volume: 62
Category: Article
ISSN: 0016-2361
DOI: 10.1016/0016-2361(83)90032-7

No coin nor oath required. For personal study only.

✦ Synopsis

Coal liquefaction experiments have been carried out to determine the tendency for adduction of several hydrocarbon-and nitrogen-containing structures typical of coal. Principal conclusions are: that even good hydrogen donors such as tetralin and octahydrophenanthrene are adducted readily; that benzyl radicals adduct primarily by radicakradical reaction, yielding thermally labile products; and that quinoline adducts to coal-derived liquids primarily by hydrogen bonding with little formation of C-C or C-N bonds.

📜 SIMILAR VOLUMES

Elimination of nitrogen from coal in pyr

Elimination of nitrogen from coal in pyrolysis and hydropyrolysis: a study of coal and model chars

✍ Krzysztof Stańczyk; Jean P. Boudou 📂 Article 📅 1994 🏛 Elsevier Science 🌐 English ⚖ 564 KB

To determine the changes in coal nitrogen structures during pyrolysis and hydropyrolysis, model chars from defined nitrogen compounds were prepared and subjected to further heating under pyrolysis and hydropyrolysis conditions. Elimination of nitrogen from such model chars as well as from coal chars

Solubilization of nitrogen-containing he

Solubilization of nitrogen-containing heterocyclic compounds in reactive solvents

✍ Mieczysław Kucharski; Dorota Głowacz-Czerwonka 📂 Article 📅 2002 🏛 John Wiley and Sons 🌐 English ⚖ 104 KB 👁 2 views

Identification and quantitative analysis

Identification and quantitative analysis of nitrogen-containing polycyclic aromatic hydrocarbons in sediments

✍ Onuska, F. I. ;Terry, K. A. 📂 Article 📅 1989 🏛 John Wiley and Sons 🌐 English ⚖ 528 KB

Modeling of coal liquefaction kinetics b

Modeling of coal liquefaction kinetics based on reactions in continuous mixtures. Part II: Comparison with experiments on catalyzed and uncatalyzed liquefaction of coals of different rank

✍ G. N. Prasad; J. B. Agnew; T. Sridhar 📂 Article 📅 1986 🏛 American Institute of Chemical Engineers 🌐 English ⚖ 1001 KB

Experimental kinetic data for three Australian coals are compared with predictions from the mathematical model developed in Part I. For these coals, as well as data reported for North American coals, the model is found to show good agreement, using the characteristic molecular weight as the only par

Thermodynamics of the transformations of

Thermodynamics of the transformations of oxygen- and sulphur-containing functional groups during coal liquefaction in hydrogen and hydrogen donor

✍ Lance Messenger; Amir Attar 📂 Article 📅 1979 🏛 Elsevier Science 🌐 English ⚖ 713 KB

The thermodynamic equilibrium constants for the reduction of oxygen and sulphur functional groups in hydrogen and in tetralin were calculated for the temperature range 327-527°C. All the reduction reactions of the oxygen groups are thermodynamically favourable both with hydrogen and with tetralin.

Including heterogeneous combustion in fi

Including heterogeneous combustion in first-order and distributed activation energies models of coal nitrogen release

✍ K.Clark Midkiff; Robert A. Altenkirch 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 605 KB

Models of fuel-nitrogen release in pulverized-coal flames are developed to account for (1) the occurrence of parallel heterogeneous and homogeneous coal-N removal and (2) the release of coal-N by numerous different first-order reactions characterized by a normal distribution of activation energies.