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High-temperature corrosion of nickel in SO2

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Abstract

The reaction of nickel with SO2 has been studied in the temperature range 650–1100°C at SO2 pressures from 10 to 760 Torr. Reaction kinetics have been studied by thermogravimetry; the reacted specimens have been characterized by means of metallography, scanning electron microscopy, and electron microprobe analysis. The reaction involves oxidation and sulfidation except at sufficiently high temperatures and low pressures of SO2 (e.g., 1000°C and 10 Torr SO2) where only formation of NiO takes place. Approximately linear reaction kinetics are observed between 650 and 900°C. Reaction mechanisms are discussed, and the relative importance of oxide formation and sulfidation is interpreted in terms of the thermodynamics of the Ni-O-S system.

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Authors and Affiliations

  1. Department of Chemistry, University of Oslo, Blindern, Oslo, Norway

    P. Kofstad & G. Åkesson

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  1. P. Kofstad
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  2. G. Åkesson
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Kofstad, P., Åkesson, G. High-temperature corrosion of nickel in SO2 . Oxid Met 12, 503–526 (1978). https://doi.org/10.1007/BF00603807

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  • DOI: https://doi.org/10.1007/BF00603807

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