Elucidating the Reaction Pathway of Glucose Electrooxidation to Its Valuable Products: The Influence of Mass Transport and Electrode Potential on the Product Distribution
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Elucidating the Reaction Pathway of Glucose Electrooxidation to Its Valuable Products : The Influence of Mass Transport and Electrode Potential on the Product Distribution. / Schlegel, Nicolas; Bagger, Alexander; Rossmeisl, Jan; Arenz, Matthias.
I: Journal of Physical Chemistry C, Bind 127, Nr. 37, 2023, s. 18609-18618.Publikation: Bidrag til tidsskrift › Tidsskriftartikel › Forskning › fagfællebedømt
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TY - JOUR
T1 - Elucidating the Reaction Pathway of Glucose Electrooxidation to Its Valuable Products
T2 - The Influence of Mass Transport and Electrode Potential on the Product Distribution
AU - Schlegel, Nicolas
AU - Bagger, Alexander
AU - Rossmeisl, Jan
AU - Arenz, Matthias
N1 - Funding Information: We acknowledge support from the Swiss National Science Foundation (SNSF) project No. 200021_184742 and the Danish National Research Foundation Center for High Entropy Alloy Catalysis (DNRF 149). A.B. acknowledges support from the Carlsberg Foundation (CF21-0144). Publisher Copyright: © 2023 American Chemical Society.
PY - 2023
Y1 - 2023
N2 - Converting glucose electrochemically to its valuable derivatives, gluconic and glucaric acids, is a promising process for the utilization of renewable carbon sources. Understanding the reaction pathway to form glucaric acid from glucose is key to performing the process efficiently. In this study, we investigate the influence of mass transport as well as electrode potential on the product distribution in glucose, gluconic acid, and glucuronic acid oxidation on a gold disk in an RDE setup. We find glucose and glucuronic acid to be easily oxidized, while the oxidation of gluconic acid is kinetically limited. Combining DFT calculations and the experimental results, we show that on gold, the oxidation of aldehyde groups proceeds readily, while the oxidation of hydroxyl groups is challenging and occurs indiscriminately on C atoms in glucose and its derivatives. Additionally, the DFT calculations present a reaction pathway that can explain the absence of glucuronic acid in the conducted experiments.
AB - Converting glucose electrochemically to its valuable derivatives, gluconic and glucaric acids, is a promising process for the utilization of renewable carbon sources. Understanding the reaction pathway to form glucaric acid from glucose is key to performing the process efficiently. In this study, we investigate the influence of mass transport as well as electrode potential on the product distribution in glucose, gluconic acid, and glucuronic acid oxidation on a gold disk in an RDE setup. We find glucose and glucuronic acid to be easily oxidized, while the oxidation of gluconic acid is kinetically limited. Combining DFT calculations and the experimental results, we show that on gold, the oxidation of aldehyde groups proceeds readily, while the oxidation of hydroxyl groups is challenging and occurs indiscriminately on C atoms in glucose and its derivatives. Additionally, the DFT calculations present a reaction pathway that can explain the absence of glucuronic acid in the conducted experiments.
U2 - 10.1021/acs.jpcc.3c03055
DO - 10.1021/acs.jpcc.3c03055
M3 - Journal article
AN - SCOPUS:85172933955
VL - 127
SP - 18609
EP - 18618
JO - The Journal of Physical Chemistry Part C
JF - The Journal of Physical Chemistry Part C
SN - 1932-7447
IS - 37
ER -
ID: 373874138