4.7 Article

The effect of temperature and ionic strength on iron carbonate (FeCO3) solubility limit

期刊

CORROSION SCIENCE
卷 51, 期 6, 页码 1273-1276

出版社

PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2009.03.009

关键词

Iron carbonate; Solubility limit; Ionic strength; Carbon dioxide corrosion

资金

  1. Ohio University Donald Clippinger Fellowship
  2. BP
  3. Champion Technologies
  4. Clariant
  5. ConocoPhillips
  6. ENI
  7. ExxonMobil
  8. MI Technologies
  9. Nalco
  10. Saudi Aramco
  11. Shell
  12. Total

向作者/读者索取更多资源

In CO2 corrosion, precipitation of iron carbonate can significantly reduce the corrosion rate of the underlying steel. Precipitation rate depends on a reliable calculation of the iron carbonate solubility limit. The open literature does not provide an expression for iron carbonate solubility that covers a wide enough range of parameters. In this study a Unified iron carbonate solubility (K-sp in mol(2)/L-2) expression is developed based on the literature data: logK(sp) = -59.3498 - 0.041377T(k) - 2.1963/T-k + 24.5724 log(T-k) + 2.518l(0.5) - 0.657l which accounts for both temperature and ionic strength effects. The predictions made with this unified equation agree well with the published experimental data. (C) 2009 Published by Elsevier Ltd.

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