Physico-chemical principles of AC electrosynthesis: reversible reactions DOI Creative Commons
Yong Rui Poh, Yu Kawamata, Joel Yuen-Zhou

и другие.

Опубликована: Июль 26, 2024

Electrolysis integrates renewable energy into chemical manufacturing and is key towards sustainable chemistry. Controlling the waveform beyond direct current (DC) addresses long-standing obstacle of chemoselectivity, yet it also expands parameter set to optimise, creating a demand for theoretical predictions. Here, we report first analytical theory predicting chemoselectivity in alternating (AC) electrosynthesis. The mechanism selective reversal unwanted redox reaction during periods opposite polarity, reflected final outcome as time-averaged effect. In ideal scenario all reactions being reversible, square AC biases more overoxidation/overreduction, whereas sine exhibits However, realistic some quasi-reversible, may behave mostly like AC. These predictions are numerical agreement with model experiments employing acetophenone align qualitatively literature precedent. Collectively, this study provides proof growing trend that promotes changing overcome limitations challenging address by varying canonical electrochemical parameters.

Язык: Английский

Physico-chemical principles of AC electrosynthesis: reversible reactions DOI Creative Commons
Yong Rui Poh, Yu Kawamata, Joel Yuen-Zhou

и другие.

Опубликована: Июль 26, 2024

Electrolysis integrates renewable energy into chemical manufacturing and is key towards sustainable chemistry. Controlling the waveform beyond direct current (DC) addresses long-standing obstacle of chemoselectivity, yet it also expands parameter set to optimise, creating a demand for theoretical predictions. Here, we report first analytical theory predicting chemoselectivity in alternating (AC) electrosynthesis. The mechanism selective reversal unwanted redox reaction during periods opposite polarity, reflected final outcome as time-averaged effect. In ideal scenario all reactions being reversible, square AC biases more overoxidation/overreduction, whereas sine exhibits However, realistic some quasi-reversible, may behave mostly like AC. These predictions are numerical agreement with model experiments employing acetophenone align qualitatively literature precedent. Collectively, this study provides proof growing trend that promotes changing overcome limitations challenging address by varying canonical electrochemical parameters.

Язык: Английский

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