Journal of Solid State Electrochemistry

, Volume 16, Issue 2, pp 775–783 | Cite as

Electrochemical behavior of aluminum and some of its alloys in chloroaluminate ionic liquids: electrolytic extraction and electrorefining

Original Paper

Abstract

The electrochemical behaviors of pure Al, Al–6%Si, Al–3%Cu, and Al–3.7%Cu–0.9%Mg–0.8%Pb–0.6%Fe alloys were investigated in the chloroaluminate ionic liquids 1-butyl-3-methylimidazolium chloride [BMIm]Cl/AlCl3 (40/60 mol%) and 1-ethyl-3-methylimidazolium chloride [EMIm]Cl/AlCl3 (40/60 mol%). Electrolytic extraction of copper from Al–Cu alloys in the employed ionic liquids was explored. The alloys were anodically dissolved in the ionic liquids and then pure copper was recovered under potentiostatic conditions. Due to the large difference between the deposition potentials of Cu and Al, pure Cu can be obtained without Al contamination. Electrorefining of Al–3%Cu and Al–6%Si alloys was also investigated in [BMIm]Cl/AlCl3 (40/60 mol%) at room temperature. High purity aluminum deposits were obtained with significantly low energy consumption of about 2 kWh/kg of Al.

Keywords

Ionic liquids Aluminum alloys Extraction Anodic dissolution Electrorefining 

Notes

Acknowledgment

The author would like to thank Prof. Frank Endres (Clausthal University of Technology) for fruitful discussions and valuable comments. The financial support by the BASF Company (Ludwigshafen, Germany) is gratefully acknowledged.

References

  1. 1.
    Welch BJ, Osteryoung RA (1981) J Electroanal Chem 118:455–466Google Scholar
  2. 2.
    Zhao Y, VanderNoot TJ (1997) Electrochim Acta 42:1639–1643CrossRefGoogle Scholar
  3. 3.
    Moffat TP (1994) J Electrochem Soc 141:L115–L117CrossRefGoogle Scholar
  4. 4.
    Ali MR, Nishikata A, Tsuru T (1997) Electrochim Acta 42:2347–2354CrossRefGoogle Scholar
  5. 5.
    Stafford GR (1994) J Electrochem Soc 141:945–953CrossRefGoogle Scholar
  6. 6.
    Tsuda T, Hussey CL, Stafford GR, Bonevich JE (2003) J Electrochem Soc 150:C234–C243CrossRefGoogle Scholar
  7. 7.
    Tsuda T, Hussey CL (2003) J Min Metall B 39:3–22CrossRefGoogle Scholar
  8. 8.
    Stafford GR (1989) J Electrochem Soc 136:635–639CrossRefGoogle Scholar
  9. 9.
    Moffat TP, Stafford GR, Hall DE (1993) J Electrochem Soc 140:2779–2786CrossRefGoogle Scholar
  10. 10.
    Endres F, Bukowski M, Hempelmann R, Natter H (2003) Angewandte Chemie 115:3550, Int. Ed.: (2003) 42:3428–3430CrossRefGoogle Scholar
  11. 11.
    Liu QX, Zein El Abedin S, Endres F (2006) Surf Coat Tech 201:1352–1356CrossRefGoogle Scholar
  12. 12.
    Jiang T, Brym MJC, Dube G, Lasia A, Brisard GM (2006) Surf Coat Tech 201:1–9CrossRefGoogle Scholar
  13. 13.
    Kamavaram V, Mantha D, Reddy RG (2003) J Min Met B 39:43–58CrossRefGoogle Scholar
  14. 14.
    Pradhan D, Mantha D, Reddy RG (2009) Electrochim Acta 54:6661–6667CrossRefGoogle Scholar
  15. 15.
    Kamavaram V, Mantha D, Reddy RG (2005) Electrochim Acta 50:3286–3295CrossRefGoogle Scholar
  16. 16.
    Wilkes JS, Levisky JA, Wilson RA, Hussey CL (1982) Inorg Chem 21:1263–1264CrossRefGoogle Scholar
  17. 17.
    Scordilis-Kelly C, Fuller J, Carlin RT, Wilkes JS (1992) J Electrochem Soc 139:694–699CrossRefGoogle Scholar
  18. 18.
    Pitner WR, Hussey CL (1997) J Electrochem Soc 144:3095–3103CrossRefGoogle Scholar
  19. 19.
    Lipsztajn M, Osteryoung RA (1983) J Electrochem Soc 130:1968–1969CrossRefGoogle Scholar
  20. 20.
    Melton TJ, Joyce J, Maloy JT, Boon JA, Wilkes JS (1990) J Electrochem Soc 137:3865–3869CrossRefGoogle Scholar
  21. 21.
    Carlin RT, Osteryoung RA (1989) J Electrochem Soc 136:1409–1415CrossRefGoogle Scholar
  22. 22.
    Hussey CL (1988) Pure & Appl Chem 60:1763–1772CrossRefGoogle Scholar
  23. 23.
    Oye HA, Jagtoyen M, Oksefjell T, Wilkes JS (1991) Mater Sci Forum 73–75:183–190CrossRefGoogle Scholar
  24. 24.
    Tierney BJ, Pitner WR, Mitchell JA, Hussey CL, Stafford GR (1998) J Electrochem Soc 145:3110–3116CrossRefGoogle Scholar
  25. 25.
    Vaughan J, Dreisinger D (2008) J Electrochem Soc 155:D68–D72CrossRefGoogle Scholar
  26. 26.
    Aravinda CL, Mukhopadyay I, Freyland W (2004) Phys Chem Chem Phys 6:5225–5231CrossRefGoogle Scholar
  27. 27.
    Endres F, Schweizer A (2000) Phys Chem Chem Phys 2:5455–5462CrossRefGoogle Scholar
  28. 28.
    Zell CA, Endres F, Freyland W (1999) Phys Chem Chem Phys 1:697–704CrossRefGoogle Scholar
  29. 29.
    Kondo M, Maeda H, Mizuguchi M (1990) JOM 42:36–37CrossRefGoogle Scholar

Copyright information

© Springer-Verlag 2011

Authors and Affiliations

  1. 1.Electrochemistry and Corrosion Laboratory, National Research CentreCairoEgypt
  2. 2.Institute of Particle TechnologyClausthal University of TechnologyClausthal-ZellerfeldGermany

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