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An experimental study of a single layer packed bed cathode in an electrochemical flow reactor

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Abstract

Experimental measurements are reported for a packed bed electrode consisting of a single planar layer of uniform copper plated spheres located between platinum anodes and restrained by two plane porous PVC diaphragms. Two mass transfer controlled reactions, namely the reductions ofm-nitrobenzene sulphonic acid and copper sulphate, were investigated and the electrochemical mass transfer data in the range 23 <Re < 520 correlated by the equationShSc −1/3 = 0-83Re 0.56, the Reynolds and Sherwood numbers being defined in terms of a particle diameter. Variations of electrode potential throughout the bed were found to be small enough to ensure reaction selectivity in the system.

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Chapter © 2012

Abbreviations

A :

Electrode area (m2)

C :

Reactant concentration (kmol m−3)

D :

Molecular diffusivity (m2 s−3)

d :

Particle diameter (m)

F :

Faraday (C mol−1)

Il :

Limiting current (A)

n :

Number of electrons per molecule

u :

Superficial velocity (ms)

v :

Kinematic viscosity (m2 s−1)

φ :

Electrode potential (V)

Re :

ud/v

Sc :

v/D

References

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Author notes

  1. B. R. Stanmore

    Present address: Department of Chemical Engineering, The University of Melbourne, Australia

Authors and Affiliations

  1. Department of Chemical Engineering, The University of Manchester Institute of Science and Technology, M60 1QD, Manchester

    D. J. Pickett & B. R. Stanmore

Authors
  1. D. J. Pickett
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  2. B. R. Stanmore
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Pickett, D.J., Stanmore, B.R. An experimental study of a single layer packed bed cathode in an electrochemical flow reactor. J Appl Electrochem 5, 95–99 (1975). https://doi.org/10.1007/BF00613210

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  • DOI: https://doi.org/10.1007/BF00613210

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