Abstract
Galvanostatic reduction ofo andm-nitroanilines to the corresponding phenylenediamines has been carried out in aqueous H2SO4 medium at a Ti/ceramic TiO2 cathode under varying conditions of acid strength, current density and temperature. The best conditions for obtaining maximum yields of the corresponding diamines have been established. Results show higher current efficiency for diamine formation at a Ti/ceramic TiO2 cathode in comparison with those obtained at a copper cathode under identical conditions, thus indicating the electrocatalytic nature of the former. Experiments on the re-use of the electrolyte have also been carried out, the results of which show that the yields of the corresponding diamines are not affected up to the fourth re-use of the electrolyte. Cyclic voltammetric studies on the reduction of these compounds confirm that the reduction of the nitro group is catalysed by Ti4+/Ti3+ redox species at the electrode.
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D. Vasudevan, S. Chellammal and P. N. Anantharaman,J. Appl. Electrochem. 21 (1991) 839.
C. Ravichandran, D. Vasudevan and P. N. Anantharaman,22 (1992) 179.
C. Ravichandran, D. Vasudevan, S. Thangavelu and P. N. Anantharaman,ibid.J. Appl. Electrochem.. in press.
F. Beck and W. Gabriel,Angew Chem. Int. Ed. Engl. 24 (1985) 771.
F. Beck,Electrochim. Acta 34 (1989) 811.
Robert S. Browning and 22 others, ‘Encyclopedia of Industrial Chemical Analysis’, Vol. 11, (edited by Foster Dee Snell and Leslie S. Ettre), John Wiley & Sons, New York (1971) p. 438 and p. 445.
M. L. Guyader,Compt. Rend.,254 (1962) 4182.
A. Talles and D. Peltier,259 (1964) 400.
M. V. King,J. Org. Chem. 26 (1961) 3323.
C. F. Bochringer, D.R.P. 116942 (1900).
C. J. Brockman, ‘Electroorganic chemistry’, John Wiley & Sons, New York (1926) p. 210.
The Merck Index, ‘An Encyclopedia of Chemicals, Drugs and Biologicals’, (edited by Susan Budavari), Merck and Co., Inc, USA (1989) p. 1157.
W. A. Anderson et al. Kirk-Othmer, ‘Encyclopedia of Chemical Technology’, Vol. 2, (edited by Galen J. Bushey, Anna Klingsberg and Lorraine Van Nes), John Wiley & Sons, New York (1978), p. 353.
C. Ravichandran, S. Chellammal and P. N. Anantharaman,J. Appl. Electrochem. 19 (1989) 465.
A. R. Day and W. Taggart,Ind. Eng. Chem. 20 (1928) 545.
The Aldrich Library of Infrared Spectra, (edited by C. J. Pouchert), Aldrich Chemical Company, Inc., USA (1981) pp. 739–41.
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Ravichandran, C., Vasudevan, D. & Anantharaman, P.N. Electrocatalytic reduction ofo andm-nitroanilines at a Ti/ceramic TiO2 cathode. J Appl Electrochem 22, 1192–1196 (1992). https://doi.org/10.1007/BF01297423
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DOI: https://doi.org/10.1007/BF01297423