Coal-tar composition

The appHcation of modem methods of analyses such as gc, low ionization voltage mass spectrometry, high pressure Hquid chromatography (hplc), and nmr has greatly increased knowledge of coal-tar composition without materially altering the quaHtative picture. 

This same series of reaction pathways can also be found in the coal pyrolysis literature The relationship of phenol and naphthalene content in coal tar is the same as that found for wood tar As graphically presented in Lowry (21) naphthalene increases while phenol decreases as the coal tar processing temperature increases Similarly, Figure 5 shows data for aqueous condensate components from wood gasification systems However, in the case of Figure 5 the weight percent of all phenolics and to C 2 aromatics are summed for the data presentation The thermal environment at temperatures above 800 C leaves little difference between the coal tar composition and that produced from wood ... 

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See also in sourсe #XX -- [ ]

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