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Your search keyword '"Ting, Louisa Rui Lin"' showing total 12 results
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3. Electrochemical Reduction of Carbon Dioxide to 1‐Butanol on Oxide‐Derived Copper

Author

Ting, Louisa Rui Lin, primary, García‐Muelas, Rodrigo, additional, Martín, Antonio J., additional, Veenstra, Florentine L. P., additional, Chen, Stuart Tze‐Jin, additional, Peng, Yujie, additional, Per, Edwin Yu Xuan, additional, Pablo‐García, Sergio, additional, López, Núria, additional, Pérez‐Ramírez, Javier, additional, and Yeo, Boon Siang, additional

Published
2020
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6. Mechanistic routes toward C3products in copper-catalysed CO2electroreductionElectronic supplementary information (ESI) available: Experimental and computational details, supplementary notes, figures, and tables. See DOI: 10.1039/d1cy01423d

Author

Pablo-García, Sergio, Veenstra, Florentine L. P., Ting, Louisa Rui Lin, García-Muelas, Rodrigo, Dattila, Federico, Martín, Antonio J., Yeo, Boon Siang, Pérez-Ramírez, Javier, and López, Núria

Abstract

The electrocatalytic CO2reduction (eCO2R) reaction powered by renewable electricity holds promise for the sustainable production of multi-carbon chemicals and fuels. On Cu-based catalysts, ethylene and ethanol (C2) have been produced in appreciable amounts. C3products (mostly terminal oxygenates) have limited yields, whereas propylene is puzzlingly absent. Herein, we devise a divide-and-conquer strategy to explain the formation of the C3-backbone and elucidate the mechanism responsible for the observed selectivity by combining network graphs, density functional theory, and experiments to prune the network and benchmark the identified path. Our approach concludes that the most frequently reported products, propionaldehyde and 1-propanol, originate from the coupling of CH2CH with C(H)O. While propylene and 1-propanol share common intermediates, the former is barely produced due to the unfavourable formation of allyl alkoxy (CH2CHCH2O), whose crucial nature was confirmed experimentally. This work paves the way for tailoring selective routes towards C3products viaeCO2R.

Published
2022
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12. Electrochemical Reduction of Carbon Dioxide to 1-Butanol on Oxide-Derived Copper.

Author

Ting LRL, García-Muelas R, Martín AJ, Veenstra FLP, Chen ST, Peng Y, Per EYX, Pablo-García S, López N, Pérez-Ramírez J, and Yeo BS

Abstract

The electroreduction of carbon dioxide using renewable electricity is an appealing strategy for the sustainable synthesis of chemicals and fuels. Extensive research has focused on the production of ethylene, ethanol and n-propanol, but more complex C 4 molecules have been scarcely reported. Herein, we report the first direct electroreduction of CO 2 to 1-butanol in alkaline electrolyte on Cu gas diffusion electrodes (Faradaic efficiency=0.056 %, j 1-Butanol =-0.080 mA cm -2 at -0.48 V vs. RHE) and elucidate its formation mechanism. Electrolysis of possible molecular intermediates, coupled with density functional theory, led us to propose that CO 2 first electroreduces to acetaldehyde-a key C 2 intermediate to 1-butanol. Acetaldehyde then undergoes a base-catalyzed aldol condensation to give crotonaldehyde via electrochemical promotion by the catalyst surface. Crotonaldehyde is subsequently electroreduced to butanal, and then to 1-butanol. In a broad context, our results point to the relevance of coupling chemical and electrochemical processes for the synthesis of higher molecular weight products from CO 2 ., (© 2020 The Authors. Published by Wiley-VCH GmbH.)

Published
2020
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