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Ammonolysis of technical lignins

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Abstract

The oxidative ammonolysis of hydrolysis lignin, cellolignin, and lignosulfonate takes place effectively with the greatest formation of a water-soluble fraction at 140–150°C in 2 h. On oxyammonolysis, cellolignin forms approximately twice as much water-soluble fraction as hydrolysis lignin, while lignosulfate desulfonates under conditions exceeding the optimum. The maximum amount of nitrogen in the water-soluble fraction of lignin (nitrogen-containing lignin) amounts to 9.0% for cellolignin and is 2–3% less for the others.

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Authors
  1. Yu. N. Forostyan
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  2. O. V. Shirikov
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  3. E. I. Forostyan
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Additional information

M. V. Frunze Simferopol' State University. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 275–278, March–April, 1987.

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Forostyan, Y.N., Shirikov, O.V. & Forostyan, E.I. Ammonolysis of technical lignins. Chem Nat Compd 23, 231–234 (1987). https://doi.org/10.1007/BF00598766

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  • DOI: https://doi.org/10.1007/BF00598766

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