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Zur thermischen Zersetzung der hochkonzentrierten Salpetersäure

Thermal decomposition of highly concentrated nitric acid

  • Anorganische Und Physikalische Chemie
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Abstract

The thermal decomposition of highly concentrated nitric acid was observed at atmospheric pressure between 0 and 60 °C for up to 273 d.

The decomposition of highly concentrated nitric acid

$$2 HNO_3 \rightleftharpoons 2 NO_2 + H_2 O + {1 \mathord{\left/ {\vphantom {1 2}} \right. \kern-\nulldelimiterspace} 2} O_2 $$

is a second order reaction in nitric acid. The reversible reaction proceeds to equilibrium.

The velocity and equilibrium constants were obtained by kinetic evaluation of the readings for HNO3 and NO2. The activation energy for decomposition was — 134 kJ/mol.

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Authors and Affiliations

  1. Bayer AG, IN-ATÜ Werkstofftechnik bzw. ZF-T Verfahrenstechnik, D-5090, Leverkusen 1, Bundesrepublik Deutschland

    Elmar-M. Horn, Helmuth Keiser & Klaus Schoeller

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  1. Elmar-M. Horn
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  2. Helmuth Keiser
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  3. Klaus Schoeller
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Horn, EM., Keiser, H. & Schoeller, K. Zur thermischen Zersetzung der hochkonzentrierten Salpetersäure. Monatsh Chem 118, 1205–1218 (1987). https://doi.org/10.1007/BF00816863

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  • DOI: https://doi.org/10.1007/BF00816863

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