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The interfacial kinetics of the reaction of CO2 with nickel: Part II. the decarburization of liquid nickel

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Abstract

The kinetics of decarburization of liquid nickel in CO2-CO mixtures have been studied at 1400 and 1500°C, using the experimental arrangement of the impinging jet. At carbon concentrations above about 1 wt pct, pressures of CO2 ⪯ 0.1 atm, and for total gas flow-rates above about 40 l/min (STP) impinging on a metal surface of 2.08 cm2, it is concluded that the interfacial reaction step controls the rate. Comparison with isotope exchange studies indicates that dissociative chemisorption of CO2 is the rate determining step. Rate constants, based on the nominal surface area, are 1.2 ×10−3 and 1.4 × 10−3 mol/cm2 · s · atm at 1400 and 1500°C, respectively.

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Authors and Affiliations

  1. Department of Materials Science and Engineering, University of Pennsylvania, 19104, Philadelphia, PA

    M. Byrne (Graduate Student) & G. R. Belton (Director, Australia and Professor)

  2. Central Research Laboratories, The Broken Hill Proprietary Co. Ltd., 2307, Shortland, NSW

    G. R. Belton (Director, Australia and Professor)

Authors
  1. M. Byrne
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  2. G. R. Belton
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on leave of absence from the Homer Research Laboratories of the Bethlehem Steel Co.

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Byrne, M., Belton, G.R. The interfacial kinetics of the reaction of CO2 with nickel: Part II. the decarburization of liquid nickel. Metall Trans B 11, 95–98 (1980). https://doi.org/10.1007/BF02657177

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  • DOI: https://doi.org/10.1007/BF02657177

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