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

被引：10

作者：

Folgueiras-Amador, Ana A. ^{[1
]}

Jolley, Katie E. ^{[1
]}

Birkin, Peter R. ^{[1
]}

Brown, Richard C. D. ^{[1
]}

Pletcher, Derek ^{[1
]}

Pickering, Stephen ^{[2
]}

Sharabi, Medhat ^{[3
,5
]}

de Frutos, Oscar ^{[4
]}

Mateos, Carlos ^{[4
]}

Rincon, Juan A. ^{[4
]}

机构：

[1] Univ Southampton, Sch Chem, Southampton SO17 1BJ, Hants, England

[2] Univ Nottingham, Fac Engn, Jubilee Campus, Nottingham NG7 2GX, England

[3] Univ Nottingham, Gas Turbines & Transmiss Res Ctr, Nottingham NG7 2TU, England

[4] Ctr Invest Lilly SA, Avda Ind 30, Alcobendas Madrid 28108, Spain

[5] Mansoura Univ, Mansoura 35516, Egypt

来源：

ELECTROCHEMISTRY COMMUNICATIONS | 2019年 / 100卷

基金：

英国工程与自然科学研究理事会;

关键词：

Electrolysis; Mass transfer; Gas evolution; Flow reactors; Anodic oxidation; Surfactants; HYDRODYNAMICS; BUBBLES;

D O I：

10.1016/j.elecom.2019.01.009

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

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 H-2 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.

引用

页码：6 / 10

页数：5

共 19 条

[1]

ANSYS Fluent Theory Guide ANSYS Inc, 2018, ANSYS FLUENT THEORY, V19, P10

[2]

Asari M., 2014, J ADV CHEM ENG, V4, P101

[3]

Asari Maedeh., 2013, American Journal of Chemical Engineering, V1, P50, DOI DOI 10.11648/J.AJCHE.20130102.14

[4] Applications of Flow Microreactors in Electrosynthetic Processes [J].

Atobe, Mahito ;

Tateno, Hiroyuki ;

Matsumura, Yoshimasa .

CHEMICAL REVIEWS, 2018, 118 (09) :4541-4572

[5] Hydrodynamics characteristics of hydrogen evolution process through electrolysis: Numerical and experimental studies [J].

El-Askary, W. A. ;

Sakr, I. M. ;

Ibrahim, K. A. ;

Balabel, A. .

ENERGY, 2015, 90 :722-737

[6] An extended channel length microflow electrolysis cell for convenient laboratory synthesis [J].

Green, Robert A. ;

Brown, Richard C. D. ;

Pletcher, Derek ;

Harji, Bashir .

ELECTROCHEMISTRY COMMUNICATIONS, 2016, 73 :63-66

[7] Electrosynthesis in Extended Channel Length Microfluidic Electrolysis Cells [J].

Green, Robert A. ;

Brown, Richard C. D. ;

Pletcher, Derek .

JOURNAL OF FLOW CHEMISTRY, 2016, 6 (03) :191-197

[8] A Microflow Electrolysis Cell for Laboratory Synthesis on the Multigram Scale [J].

Green, Robert A. ;

Brown, Richard C. D. ;

Pletcher, Derek .

ORGANIC PROCESS RESEARCH & DEVELOPMENT, 2015, 19 (10) :1424-1427

[9] Understanding the Performance of a Microfluidic Electrolysis Cell for Routine Organic Electrosynthesis [J].

Green, Robert A. ;

Brown, Richard C. D. ;

Pletcher, Derek .

JOURNAL OF FLOW CHEMISTRY, 2015, 5 (01) :31-36

[10] Continuous direct anodic flow oxidation of aromatic hydrocarbons to benzyl amides [J].

Kabeshov, Mikhail A. ;

Musio, Biagia ;

Ley, Steven V. .

REACTION CHEMISTRY & ENGINEERING, 2017, 2 (06) :822-825

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