綠鏽 (化合物)

綠鏽(英語:Green rust)是一類含鐵(II)、鐵(III)混合價態氫氧化物的綠色晶體的總稱。這類晶體中,除了Fe2+、Fe3+和OH外,還有可能有CO2−
3
Cl
SO2−
4
等陰離子在其層狀雙氫氧化合物結構中,研究最多的物種有:[1]

  • 綠鏽碳酸鹽 - GR(CO2−
    3
    ):[Fe2+
    4
    Fe3+
    2
    (HO
    )12]2+ · [CO2−
    3
    ·2H
    2
    O
    ]2−.[2][3][4][5]
  • 綠鏽鹽酸鹽 - GR(Cl
    ):[Fe2+
    3
    Fe3+
    (HO
    )8]+ · [Cl
    ·nH
    2
    O
    ].[4][5][6]
  • 綠鏽硫酸鹽 - GR(SO2−
    4
    ):[Fe2+
    4
    Fe3+
    2
    (HO
    )12]2+ · [SO2−
    4
    ·2H
    2
    O
    ]2−.[5][7][8]
硫酸亞鐵溶液和氫氧化鈉溶液在空氣中反應,生成淺綠色的沉澱

其它文獻中還有這些陰離子的報道:Br
[7]F
[7]I
[9]NO
3
[10]SeO2−
4
[11]

綠鏽最初在的表面被發現。[2]它在自然界中也能以該礦物的形式存在。[1]

製備

編輯

綠鏽可由含Fe(II)的溶液在SO42-、CO32-或Cl-等離子的存在下,用氧化劑(如空氣過氧化氫等)氧化,再用NaOH沉澱得到。[12]

用途

編輯

綠鏽可用於一些有機物的降解。[13]

參考文獻

編輯
  1. ^ 1.0 1.1 J.-M. R. Génin, Ph. Refait, L. Simon, and S. H. Drissi (1998): "Preparation and Eh-pH diagrams of Fe(II)-Fe(III) green rust compounds; hyperfine interaction characteristics and stoichiometry of hydroxy-chloride, -sulphate and –carbonate". Hyperfine Interactions, volume 111, pages 313-318. doi:10.1023/A:1012638724990
  2. ^ 2.0 2.1 P. P. Stampfl (1969): "Ein basisches Eisen II-III Karbonat in Rost. Corrosion Science 9, pages 185-187.
  3. ^ Hans C. B. Hansen (1989): "Composition, stabilization, and light absorption of Fe(II)Fe(III) hydroxy-carbonate ('green rust')". Clay Minerals, volume 24, pages 663-669. doi:10.1180/claymin.1989.024.4.08
  4. ^ 4.0 4.1 M. Abdelmoula, Ph. Refait, S. H. Drissi, J. P. Mihe, and J.-M. R. Génin (1996): "Conversion electron Mössbauer spectroscopy and X-ray diffraction studies of the formation of carbonate-containing green rust one by corrosion of metallic iron in NaHCO3 and (NaHCO3 + NaCl) solutions". Corrosion Science, volume 38, pages 623-633. doi:10.1016/0010-938X(95)00153-B
  5. ^ 5.0 5.1 5.2 M. Abdelmoula, F. Trolard, G. Bourrié and J.-M. R. Génin (1998): "Evidence of the Fe(II)–Fe(III) green rust `fougerite' mineral occurrence in a hydromorphic soil and its transformation with depth". Hyperfine Interactions, volume 111, pages 231-238. doi:10.1023/A:1010802508927
  6. ^ W. Feitknecht and G. Keller (1950): "Über die dunkelgrünen Hydroxyverbindungen des Eisens". Zeitschrift für anorganische und allgemeine Chemie, volume 262, pages 61-68. doi: 10.1002/zaac.19502620110
  7. ^ 7.0 7.1 7.2 J. D. Bernal, D. R. Dasgupta, and A. L. Mackay (1959): "The oxides and hydroxides of iron and their structural inter-relationships". Clay Minerals Bulletin, volume 4, pages 15-30. doi:10.1180/claymin.1959.004.21.02
  8. ^ J.-M. R. Génin, A. A. Olowe, B. Resiak, N. D. Benbouzid-Rollet, M. Confente and D. Prieur (1993): "Identification of sulphated green rust 2 compound produced as a result of microbially induced corrosion of steel sheet piles in harbour". In Marine Corrosion of Stainless Steels: Chlorination and Microbial Effects, European Federation Corrosion Series, The Institute of Materials, London; volume 10, pages 162-166.
  9. ^ L. Vins, J. Subrt, V. Zapletal, and F. Hanousek (1987): "Preparation and properties of green rust type substances". Collect. Czech. Chem. Comm. volume 52, pages 93-102.
  10. ^ J. R. Gancedo, M. L. Martinez, and J. M. Oton (1983): "Formación de 'herrumbre verde' en soluciones de NH4NO3" (= "Formation of green rust in NH4NO3 solutions"). Anales de Química, Série A, volume 79, pages 470-472.
  11. ^ P Refait, L Simon, J-M R Génin. Reduction of SeO42- Anions and Anoxic Formation of Iron(II)−Iron(III) Hydroxy-Selenate Green Rust. Environ. Sci. Technol., 2000, 34 (5), pp 819–825 DOI: 10.1021/es990376g
  12. ^ 陳英, 吳德禮, 張亞雷 等. 綠鏽的結構特徵與反應活性頁面存檔備份,存於互聯網檔案館)[J]. 化工學報, 2014
  13. ^ 徐楠楠,阮秀秀. 有機綠鏽對水體有機污染物的降解去除. 全國環境化學學術大會, 2013