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The influence of non-ionic surfactants on electrosynthesis in extended channel, narrow gap electrolysis cells

Folgueiras-Amador, Ana A.; Jolley, Katie E.; Birkin, Peter R.; Brown, Richard C.D.; Pletcher, Derek; Pickering, Stephen; Sharabi, Medhat; de Frutos, Oscar; Mateos, Carlos; Rincón, Juan A.

Authors

Ana A. Folgueiras-Amador

Katie E. Jolley

Peter R. Birkin

Richard C.D. Brown

Derek Pletcher

Medhat Sharabi

Oscar de Frutos

Carlos Mateos

Juan A. Rincón



Abstract

It is demonstrated that the addition of a non-ionic surfactant (Triton X-100 or Brij L23) to the electrolyte medium leads to a significant improvement to the current efficiency for the methoxylation of N-formylpyrrolidine in a flow electrolysis cell with a horizontal, extended channel length and narrow interelectrode gap (the Ammonite 8). In the presence of Brij L23, the fractional current efficiency is much improved and approaches 1.0 while maintaining a fractional selectivity of 0.99 at a very high conversion in a single pass. The improvement in current efficiency is ascribed to a decrease in the bubble size of the H2 gas evolved at the counter electrode leading to an enhancement in the mass transport regime in the flow stream through the extended channel with millimetre dimensions.

Journal Article Type Article
Publication Date 2019-03
Journal Electrochemistry Communications
Print ISSN 1388-2481
Publisher Elsevier
Peer Reviewed Peer Reviewed
Volume 100
Pages 6-10
APA6 Citation Folgueiras-Amador, A. A., Jolley, K. E., Birkin, P. R., Brown, R. C., Pletcher, D., Pickering, S., …Rincón, J. A. (2019). The influence of non-ionic surfactants on electrosynthesis in extended channel, narrow gap electrolysis cells. Electrochemistry Communications, 100, 6-10. https://doi.org/10.1016/j.elecom.2019.01.009
DOI https://doi.org/10.1016/j.elecom.2019.01.009
Keywords Electrolysis; Mass transfer; Gas evolution; Flow reactors; Anodic oxidation; Surfactants

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