Estimation of metal oxide solubility and understanding corrosion in supercritical water

Tadafumi Adschiri, Kiwamu Sue, Kunio Arai, Yutaka Watanabe

Research output: Contribution to journalConference articlepeer-review

11 Citations (Scopus)

Abstract

This paper estimates metal oxide solubility in high temperature water for understanding the corrosion environment of supercritical water. The recently proposed method of predicting metal oxide solubility in high temperature water without any fitting parameter is explained in this paper. Chromium oxide, iron oxide, nickel oxide in high temperature water were estimated by the model. Chromium oxide solubility in high temperature region is the lowest among the three oxides (chromium, iron, and nickel), which is supposed to relate to the resistance against the corrosion of chromium including metals. Metal oxide solubility increased with increasing temperature at a higher pH region and at neutral conditions. The result suggests that excess addition of neutralizer in supercritical oxidation enhances corrosion.

Original languageEnglish
JournalNACE - International Corrosion Conference Series
Volume2001-March
Publication statusPublished - 2001 Jan 1
EventCorrosion 2001 - Houston, United States
Duration: 2001 Mar 112001 Mar 16

Keywords

  • Corrosion
  • Estimation
  • Metal oxides
  • Solubility
  • Supercritical water

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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