Continuous Kolbe Electrolysis Using an Electrochemical Microreactor, Product Separation, and Electrolyte Recycling

Baumgarten N, Etzold BJ, Löb P, Magomajew J, Ziogas A (2024)

Publication Type: Journal article

Publication year: 2024

Journal

Chemie Ingenieur Technik Wiley-VCH Verlag

Book Volume: 96

Pages Range: 789-800

Journal Issue: 6

DOI: 10.1002/cite.202300109

Abstract

With our electrochemical microreactor and the use of an aqueous electrolyte it was possible to realize continuous Kolbe electrolysis including separation of the organic product phase, recycling of the aqueous electrolyte, and automated reconcentration of fatty acids based on inline Raman measurements. Electrolysis experiments revealed that the addition of aqueous KOH is essential to decrease the KHCO3 concentration and to stabilize the pH value of the electrolyte. Stable conversion (63–58 %) and Kolbe selectivity (90–92 %) could be achieved within 75 min. Removal of KHCO3 before reconcentration was provided as possible solution to maintain performance for increased electrolysis times.

Authors with CRIS profile

Bastian Etzold

Involved external institutions

Fraunhofer-Institut für Mikrotechnik und Mikrosysteme IMM / Fraunhofer Institute for Microengineering and Microsystems DE Germany (DE) Technische Universität Darmstadt DE Germany (DE)

How to cite

APA:

Baumgarten, N., Etzold, B.J., Löb, P., Magomajew, J., & Ziogas, A. (2024). Continuous Kolbe Electrolysis Using an Electrochemical Microreactor, Product Separation, and Electrolyte Recycling. Chemie Ingenieur Technik, 96(6), 789-800. https://doi.org/10.1002/cite.202300109

MLA:

Baumgarten, Nils, et al. "Continuous Kolbe Electrolysis Using an Electrochemical Microreactor, Product Separation, and Electrolyte Recycling." Chemie Ingenieur Technik 96.6 (2024): 789-800.

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