Issue 16, 2023

Electrochemical transformation of d,l-glutamic acid into acrylonitrile

Abstract

Acrylonitrile is an important industrial platform chemical mainly produced by the SOHIO process using fossil propylene, ammonia, and air as substrates. In view of climate change, ingenuity is needed to become independent of fossil resources and to achieve sustainable production of basic chemicals such as acrylonitrile. One opportunity is to use biogenic substrates that are converted by electrolysis. Using electrons as oxidants is an environmentally friendly alternative to stochiometric amounts of molecular oxidising agents that generate waste after usage. Here, we present a new route for the electrochemical synthesis of green acrylonitrile using the biogenic amino acid D,L-glutamic acid as a substrate by utilising electro-oxidative decarboxylation and non-Kolbe electrolysis. By optimising the electro-oxidative decarboxylation, the number of steps was successfully reduced, resulting in a two-step process for the formation of the monomer. Acrylonitrile was synthesised with a maximum yield of 41.1%.

Graphical abstract: Electrochemical transformation of d,l-glutamic acid into acrylonitrile

Supplementary files

Article information

Article type
Paper
Submitted
31 mar. 2023
Accepted
20 jun. 2023
First published
11 jul. 2023

Green Chem., 2023,25, 6231-6237

Electrochemical transformation of D,L-glutamic acid into acrylonitrile

J. Kümper, J. Meyers, R. Sebers, N. Kurig and R. Palkovits, Green Chem., 2023, 25, 6231 DOI: 10.1039/D3GC01045G

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