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The nitration of spruce wood lignin by Kürschner's method


  1. 1.

    The nitrolignins obtained by six successive treatments of a single portion of spruce sawdust with alcoholic nitric acid have been studied.

  2. 2.

    The products extractable with ether from the mother liquors after the precipitation of the nitrolignin have been isolated and investigated.

  3. 3.

    In the nitration of lignin by Kürschner's method, part of the lignin is converted into water-soluble degradation products, which explains the low yield of lignin when this method is used as compared with the well-known sulfuric acid methods.

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Literature cited

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    K. Kürschner and A. Hoffer, Techn. und Chem. Papier und Zellstoff-Fabr.,26, 125 (1929); Chemiker-Zig,55, 161 (1931).

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    K. Kürschner and M. G. Popik, Holzforschung,16, 1 (1962).

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    K. Kürschner, Holz Roh- und Werkstoff,16, 288 (1958); K. Kürschner and G. Hostomsky, Holzforschung,12, 142 (1958).

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    L. Kalb, F. Plessmann, and H. Lorenz, Papier-Fabr.,36, Text-Wiss. Tl. 453 (1938).

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    K. Kürschner and F. Schindler, Cellulosechem.,18, 12 (1940).

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    F. P. Komarov, Handbook for Laboratory Work on the Chemistry of Wood and Cellulose [in Russian], Gostekhlesizdat, Leningrad (1934), p. 55.

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    L. L. Sergeeva, N. N. Shorygina, and B. V. Lopatin, Izv. AN SSSR, Otd. khim. n.,1962, 1295; L. L. Sergeeva, N. N. Shorygina, and B. V. Lopatin, Izv. AN SSSR, Ser. khim.,1964, 1254; L. L. Sergeeva and N. N. Shorygina, Izv. AN SSSR, Ser. khim.,1965, 1630; N. N. Shorygina, N. P. Mikhilov, and B. V. Lopatin, Khimiya prirodn. soed.,1966, 58.

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Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 8, pp. 1774–1781, August, 1967.

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Grushnikov, O.P., Shorygina, N.N. The nitration of spruce wood lignin by Kürschner's method. Russ Chem Bull 16, 1703–1708 (1967).

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  • Precipitation
  • Ether
  • Lignin
  • Sulfuric Acid
  • Nitric Acid