| Autor: |
Brix, Ann Cathrin, Krysiak, Olga A., Cechanaviciutè, Ieva A., Bjelovučić, Gal, Banko, Lars, Ludwig, Alfred, Schuhmann, Wolfgang |
| Předmět: |
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| Zdroj: |
ChemElectroChem; Feb2024, Vol. 11 Issue 3, p1-9, 9p |
| Abstrakt: |
The production of green hydrogen may be greatly aided by the use of an alternative anode reaction replacing oxygen evolution to increase energy efficiency and concomitantly generate value‐added products. Lignin, a major component of plant matter, is accumulated in large amounts in the pulp and paper industry as waste. It has excellent potential as a source of aromatic compounds and can be transformed into the much more valuable aroma chemical vanillin by electrochemical depolymerisation. We used a flow‐through model electrolyser to evaluate electrocatalyst‐modified Ni foam electrodes prepared by a scalable spray‐polymer preparation method for oxidative lignin depolymerisation. We demonstrate how pulsing, i. e. continuously cycling between a lower and a higher applied current, increases the amount of formed vanillin while improving the energy efficiency. Further, we present a scanning droplet cell‐assisted high‐throughput screening approach to discover suitable catalyst materials for lignin electrooxidation considering that a suitable electrocatalyst should exhibit high activity for lignin depolymerization and simultaneously a low activity for vanillin oxidation and oxygen evolution. Combining electrosynthesis and electrocatalysis can aid in developing new customised materials for electrochemical processes of potential industrial interest. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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