13C n.m.r. study of raw materials for carbon black |
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Authors: | Jürgen W. Stadelhofer Heinz Kluge Ira Koch Herbert Dreeskamp |
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Affiliation: | 1. Rütgerswerke AG, Postfach 504, D-4620 Castrop-Rauxel, Federal Republic of Germany;2. lnstitute for Physical and Theoretical Chemistry of the Technical University Carolo-Wilhelmina, Postfach 3329, D-3300 Braunschweig, Federal Republic of Germany |
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Abstract: | 13C n.m.r. spectroscopy has been applied to investigate a number of coal tar and petroleum-derived carbon black feedstocks. Application of the J-modulated spin echo technique is especially rewarding, as this method renders the quaternary carbons directly detectable. Thus the quality of carbon black feedstocks can additionally be gauged on the basis of the contents of quaternary carbons, which is a direct indication of the carbon yield in the carbon black production process. |
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Keywords: | carbon coal tar n.m.r. |
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