Determination of standard Gibbs free energy of formation of chukanovite and Pourbaix diagrams of iron in carbonated media

被引：57
作者：
Azoulay, I. [1 ]
Remazeilles, C. [1 ]
Refait, Ph. [1 ]
机构：
[1] Univ La Rochelle, EA 3167, Lab Etud Mat Milieux Agressifs, F-17042 La Rochelle 01, France
来源：
CORROSION SCIENCE | 2012年 / 58卷
关键词：
Pourbaix diagram; Steel; Rust; IR spectroscopy; THERMODYNAMIC PROPERTIES; CORROSION BEHAVIOR; ARCHAEOLOGICAL ARTIFACTS; STEEL; ELECTROLYTES; HYDROXIDE; OXIDATION; GOETHITE; IONS; SOIL;
D O I：
10.1016/j.corsci.2012.01.033
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Mixtures of Fe(OH)(2) and Fe-2(OH)(2)CO3 were obtained by precipitation from FeCl2, NaOH and Na2CO3 solutions. These two-phase systems did not change with time and equilibrium conditions were supposed to be established after 6 months. The standard Gibbs free energy of formation of chukanovite could then be estimated at -1171.5 +/- 3.0 kJ mol(-1). In contrast, mixtures of FeCO3 and Fe-2(OH)(2)CO3 could not been obtained by precipitation but siderite formed in some cases after 25 months of ageing. Pourbaix diagrams of iron including chukanovite were drawn showing that the Fe(II) hydroxycarbonate was metastable, at 25 degrees C, with respect to siderite. (c) 2012 Elsevier Ltd. All rights reserved.
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收藏
页码：229 / 236
页数：8
相关论文
共 36 条
  • [1] [Anonymous], [No title captured]
  • [2] Revised Pourbaix diagrams for iron at 25-300 degrees C
    Beverskog, B
    Puigdomenech, I
    [J]. CORROSION SCIENCE, 1996, 38 (12) : 2121 - 2135
  • [3] ON THE INFLUENCE OF CARBONATE IN MINERAL DISSOLUTION .2. THE SOLUBILITY OF FECO3 (S) AT 25-DEGREES-C AND 1 ATM TOTAL PRESSURE
    BRUNO, J
    WERSIN, P
    STUMM, W
    [J]. GEOCHIMICA ET COSMOCHIMICA ACTA, 1992, 56 (03) : 1149 - 1155
  • [4] Chivot J., 2004, FONCTIONS THERMODYNA
  • [5] Dong JH, 2002, MATER RES SOC SYMP P, V713, P105
  • [6] THE PREPARATION AND THERMODYNAMIC PROPERTIES OF FE(II)-FE(III) HYDROXIDE-CARBONATE (GREEN-RUST-1) - POURBAIX DIAGRAM OF IRON IN CARBONATE-CONTAINING AQUEOUS-MEDIA
    DRISSI, SH
    REFAIT, P
    ABDELMOULA, M
    GENIN, JMR
    [J]. CORROSION SCIENCE, 1995, 37 (12) : 2025 - 2041
  • [7] Erdos V.E., 1976, WERKST KORROS, V27, P304, DOI DOI 10.1002/MACO.19760270504
  • [8] Review and recommended thermodynamic properties of FeCO3
    Fosbol, P. L.
    Thomsen, K.
    Stenby, E. H.
    [J]. CORROSION ENGINEERING SCIENCE AND TECHNOLOGY, 2010, 45 (02) : 115 - 135
  • [9] CARBONATE AND BICARBONATE TRACE-METAL COMPLEXES - CRITICAL REEVALUATION OF STABILITY-CONSTANTS
    FOUILLAC, C
    CRIAUD, A
    [J]. GEOCHEMICAL JOURNAL, 1984, 18 (06) : 297 - 303
  • [10] Ghosh M.M., 1966, J SANITARY ENG DIVIS, V16, P199
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