Abstract
The preparation of ferrate by the anodic dissolution of iron in 10m NaOH using a membrane cell with an iron wool anode is described. It is shown that the current efficiency drops from an initial value of 45–60% to ∼25% during a 2–3 h electrolysis. This is shown to be due to a change in the iron anode surface, probably the composition, structure and/or thickness of surface films. The influence of cell current as well as NaOH concentration and temperature on the current efficiency is described. The kinetics of the reactions of ferrate with water, alcohols and phenol have also been investigated and it is shown that some organics (methanol, ethanediol and phenol) undergo complete oxidation to CO2 and H2O even at room temperature.
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References
R. Bartzatt and D. Nagel,Archives Environ. Health 46 (1991) 313.
T. D. Waite and M. Gilbert,J. Water Pollution Control Fed. 50 (1978) 543.
J. D. Carr, P. B. Keller and A. T. Ericson,Environ. Sci. Technol. 15 (1981) 184.
N. Neveux, N. Aubertin, R. Gerardin and O. Evrard,in ‘Chemical Water and Wastewater Treatment III’ (edited by R. Klute and H. H. Hahn), Springer Verlag, Berlin (1994).
T. Schink and T. D. Waite,Water Res. 14 (1980) 1705.
R. K. Murmann and P. R. Robinson,ibid. 8 (1974) 543.
J. Fagan and T. D. Waite,Environ. Sci. Technol. 17 (1983) 123.
T. Ernst, M. Wawrzenczyk, M. Cyfert and M. Wronska,Bull. Acad. Polonaise Sci. 27 (1979) 773.
D. G. Lee and H. Gai,Can. J. Chem. 71 (1993) 1394.
R. H. Wood,J. Am. Chem. Soc. 80 (1958) 2038.
R. J. Audette, J. W. Quail and P. J. Smith,Tetrahedron Lett. 39 (1971) 279.
J. N. BeMiller, V. G. Kumari and S. D. Darling,ibid. 40 (1972) 4143.
J. C. Poggendorf,Pogg. Ann. 54 (1841) 372.
F. Haber,Z. Elektrochem. 7 (1900) 215.
W. Pick and F. Haber,ibid. 7 (1901) 713.
G. Grube and H. Gmelin,ibid. 26 (1920) 153.
Idem, ibid. and H. Gmelin,ibid. 26 (1920) 459.
G. Grube,ibid. 33 (1927) 389.
J. Tousek,Coll. Czech. Chem. Comm. 27 (1962) 908 and 914.
A. S. Venkatadri, H. H. Bauer and W. F. Wagner,J. Electrochem. Soc. 121 (1974) 249.
J. P. Deininger (Olin),US Patent 4 435–256 (1984).
J. P. Deininger and R. L. Dotson (Olin),US Patent 4 435 257 (1984).
F. Beck, R. Kaus and M. Oberst,Electrochim. Acta 30 (1985) 173.
A. A. Kamnev and B. B. Ezhov,Soviet Electrochem. 24 (1988) 1027.
K. Bouzek and I. Rousar,J. Appl. Electrochem. 23 (1993) 1317.
Idem and I. Rousar,Electrochim. Acta 38 (1993) 1717.
D. Pletcher and F. C. Walsh,in ‘Electrochemistry for a Cleaner Environment’ (edited by J. D. Genders and N. L. Weinberg), The Electrosynthesis Co., Lancaster, NY (1992).
A. Carrington, D. Schonland and M. R. C. Symons,J. Chem. Soc. (1957) 695.
J. O'M. Bockris, B. E. Conway, E. Yeager and R. E. White (eds), ‘Comprehensive Treatise of Electrochemistry’, Vol. 4, Plenum Press, New York (1981).
O. J. Murphy,in ‘Electrochemistry in Transition from the 20th to the 21st Century’ (edited by O. J. Murphy, S. Srinivasan and B. E. Conway), Plenum, New York (1992) p. 521.
R. D. Armstrong and I. Baurhoo,J. Electroanal. Chem. 34 (1972) 41.
Idem, ibid. 40 (1972) 325.
A. S. Venkatadri, W. F. Wagner and H. H. Bauer,Anal. Chem. 43 (1971) 1115.
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Denvir, A., Pletcher, D. Electrochemical generation of ferrate Part I: Dissolution of an iron wool bed anode. J Appl Electrochem 26, 815–822 (1996). https://doi.org/10.1007/BF00683743
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DOI: https://doi.org/10.1007/BF00683743