Process Optimization Studies on Mediated Electrooxidation 

 

T. Raju *, C. Ahmed Basha

 

Central Electrochemical Research Institute, KARAIKUDI-630 006, India

 

 

Abstract

The purpose of optimization consists in establishing suitable values for the operational parameters of a process, in order to achieve the results of that process to the greatest possible advantages. These ideal operating conditions are known as the optimum. The process parameters are current density, temperature, concentration, electrode materials, flow rate, cell voltage, mixing and diaphragm and engineering quantities are like current efficiency, space-time yield, energy consumption, yield and conversion. There are several possible targets in optimization of process and the main aim is to get maximum yield, high current efficiency, high purity and minimum energy consumption for mediated electrochemical oxidation.  Mediated electro oxidation or indirect electrosynthesis is a cyclic process involving electrochemical generation of cerium(IV) and uses that agent to effect a chemical reaction. Cerium(IV) has attracted attention in electroorganic synthesis for synthesis of aldehydes and quinones.

Keywords: optimization, parameters, mediated electro oxidation, current efficiency, yield, space-time yield.

 

 

Texto disponível em PDF

Full text only in PDF format

 

 

References

1.   R.M. Driver, “Statistical methods and the chemist”, Chem. Brit. 6.4 (1970) 154.        [ Links ]

2.   Walters, Parker, Morgan, “Sequential Simplex Optimization”, CRC Press, 1991.        [ Links ]

3.   D.C. Montgomery, “Design and Analysis of Experiments”, 3^rd edn., John Wiley & Sons, Inc., New York, 1991.         [ Links ]

4.   D.J. Picket “Electrochemical Reactor Design”, Elsevier, New York(1979)  362-371.        [ Links ]

5.   F.Goodridge, K. Scott, “Electrochemical Process Engineering”, Plenum Press, New York (1995) 14.        [ Links ]

6.   E. Heitz, G. Kreysa “Principles of Electrochemical Engineering”, VCH, New York (1986) 122.        [ Links ]

7.   D. Pletcher and E.M.Valdes, Electrochim. Acta 33 (1988) 499.        [ Links ]

8.   K. Krammer, P.M. Robertson and N. Ibl, J. Appl. Electrochem. 10 (1980) 29.        [ Links ]

9.   H.Wendt and H. Schneider, J. Appl. Electrochem. 16 (1986) 134.        [ Links ]

10.  G. Kreysa and H. Medin, J. Appl. Electrochem. 16 (1986) 757.        [ Links ]

11.   J.P. Millington and I.M. Dalrymple, J. Appl. Electrochem. 16 (1986) 885.        [ Links ]

12.   L. Syper, Tetrahedron Lett. (1966) 4493.        [ Links ]

13.   M. Periasamy and M.V. Bhatt, Synthesis (1977) 330.        [ Links ]

14.   M.V. Bhatt and M. Periyasamy, J. Chem. Soc., Perkins Trans. II (1993) 1811.        [ Links ]

15.   R. Ramasamy, M.S.V. Pathy and H.V.K. Udupa, Bull. Chem. Soc. Japan  35 (1962) 751.        [ Links ]

16.   V.S. Krishnan, V.A.Vyas, M.S.V. Pathy and H.V.K. Udupa, J. Electrochem. Soc. Japan 37 (1969) 74.        [ Links ]

17.   R.M. Spotnitz, R.P. Kreh, J.T. Lundquist, R. Press, J. Appl. Electrochem. 20 (1990) 209.        [ Links ]

18.   R.P. Kreh, R.M. Spotnitz and J.T. Lundquist, Tetrahedron Lett. 28 (1987)1067.        [ Links ]

19.   R.P. Kreh, R.M. Spotnitz and J.T. Lundquist, J. Org. Chem. 54 (1989) 1526.        [ Links ]

20.   R.P. Kreh, R.M. Spotnitz and J.T. Lundquist, in J. David Genders and D. Pletcher, Eds. “Electro Synthesis from Laboratory to Pilot to Production”. The Electrosynthesis Company, Inc., E. Amherst, New York (1990) Chapter 10.        [ Links ]

21.   H. Stephen,  US Patent W 09 318 208 .(1993) Chem.Abstr.120. 199439m (1994)        [ Links ]

22.   T.Vijayabharathi, D.Velayutham, M. Noel, J. Appl. Electrochem. 31 (2001) 979.        [ Links ]

 

 

* Corresponding author. E-mail address: rajuorganic@yahoo.co.in